Find the mean proportional between 4 and 32. MCQ with Answer and Explanation

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Find the mean proportional between 4 and 32.

A. 11

B. 22

C. 14

D. 36

Answer: Option A

Solution (By JKSSB Mock Tests)

Mean proportional = √(4 × 32) = √(128) = 11.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 4:5 and b:c = 5:6, then a:b:c = ?

A. 4:6:6

B. 8:10:12

C. 3:5:7

D. 4:5:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:6 ⇒ a:b:c = 4:5:6.

This question belongs to: Maths Ratio and Proportion

Question #2

Two numbers are in ratio 7:12. Their difference is 120. What is their sum?

A. 658

B. 275

C. 593

D. 551

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Correct Answer: Option D

Explanation:
Numbers 7k, 12k. Difference |7-12|k = 120 ⇒ k = 24. Sum = (7+12)k ≈ 551.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 3:4 and b:c = 4:7, then a:b:c = ?

A. 3:4:7

B. 2:4:8

C. 6:8:14

D. 3:5:7

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 3:4, b:c = 4:7 ⇒ a:b:c = 3:4:7.

This question belongs to: Maths Ratio and Proportion

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