Find the mean proportional between 25 and 32. MCQ with Answer and Explanation

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Find the mean proportional between 25 and 32.

A. 57

B. 56

C. 31

D. 28

Answer: Option D

Solution (By JKSSB Mock Tests)

Mean proportional = √(25 × 32) = √(800) = 28.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 4:9 and b:c = 9:10, then a:b:c = ?

A. 4:9:10

B. 4:10:10

C. 3:9:11

D. 8:18:20

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:9, b:c = 9:10 ⇒ a:b:c = 4:9:10.

This question belongs to: Maths Ratio and Proportion

Question #2

Two numbers are in ratio 6:4. Their difference is 103. What is their sum?

A. 558

B. 617

C. 250

D. 500

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Correct Answer: Option D

Explanation:
Numbers 6k, 4k. Difference |6-4|k = 103 ⇒ k = 51. Sum = (6+4)k ≈ 500.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 4:3 and b:c = 3:12, then a:b:c = ?

A. 3:3:13

B. 4:4:12

C. 4:3:12

D. 8:6:24

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 4:3, b:c = 3:12 ⇒ a:b:c = 4:3:12.

This question belongs to: Maths Ratio and Proportion

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