Proportional Reasoning - 1 | IT

Question 12

Does the drawing look more realistic if the ratios are proportional? Why? Why not?

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Solution

Using correct size relationships between body parts makes a drawing look real.

Step 1 — Understanding Proportions

Proportions are about how big different parts are compared to each other. Think of how your head size relates to your body height. Or how long your arm is compared to your leg. Real human bodies have specific, natural size relationships. For example, an adult's head is roughly one-eighth of their total height. These fixed relationships are called natural proportions.

Step 2 — Why Proportional Drawings Look Real

When we draw, we try to copy these natural proportions. If the head is the right size for the body, it looks balanced. If arms and legs are also in correct relation, the figure looks natural. Our eyes are used to seeing real human bodies. So, a drawing that matches real proportions looks believable and human-like.

Step 3 — Why Non-Proportional Drawings Look Unrealistic

What if we do not use these correct size relationships? Imagine a drawing with a tiny head on a giant body. Or a person with arms as long as their whole body. These drawings have incorrect, or non-proportional, ratios. Our brain immediately notices these differences from real people. Such drawings look distorted, strange, or even cartoonish. They do not look like real human beings.

Answer

(i) Yes, the drawing definitely looks more realistic if the ratios are proportional. (ii) A real human body has natural proportions. When you draw using these real-life proportions, the parts fit correctly. So, the drawing looks balanced, natural, and human-like. (iii) It looks unrealistic when ratios are not proportional. If the ratios are wrong, the drawing looks distorted or cartoonish.

More questions in IT

Q1

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Q2

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Q3

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Q4

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Q5

Is the teacher-to-student ratio in your school proportional to the one in my school?

Q6

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Q7

Can you draw a rectangle in your notebook whose width and height are proportional to the ratio of the blackboard?

Q8

Compare the rectangle you have drawn to those drawn by your classmates. Do they all look the same?

Q9

Context: Manjunath usually mixes 15 mL of coffee decoction with 35 mL of milk to make filter coffee (ratio 15 : 35). For 'stronger' coffee, he mixes 20 mL of decoction with 30 mL of milk (ratio 20 : 30).

Q. Why is this coffee stronger?

Q10

Context: Manjunath usually mixes 15 mL of coffee decoction with 35 mL of milk to make filter coffee (ratio 15 : 35). For 'lighter' coffee, he mixes 10 mL of coffee and 40 mL of milk, making the ratio 10 : 40.

Q. Why is this coffee lighter?

Q11

The following table shows the different ratios in which Manjunath mixes coffee decoction with milk. Write in the last column if the coffee is stronger or lighter than the regular coffee.

Q12

Does the drawing look more realistic if the ratios are proportional? Why? Why not?

Q13

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Would it take Puneeth’s father more time or less time to reach Kanpur? Think about it.

Q14

Context: The volume of a sachet is 6 mL and its price is ₹2. The volume of a small bottle is 180 mL and its price is ₹154. The ratio of the volume of a sachet to a small bottle is 6 : 180. The ratio of their prices is 2 : 154.

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Q15

Context: You have 12 countable objects or counters to share between the two of you.

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Q16

Context: You have 12 countable objects or counters to share between the two of you.

Q. If your partner gets 5 counters, how many objects will you get? What is the ratio of the counters?

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