Find the mean proportional between 22 and 51. MCQ with Answer and Explanation

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Find the mean proportional between 22 and 51.

A. 73

B. 66

C. 36

D. 33

Answer: Option D

Solution (By JKSSB Mock Tests)

Mean proportional = √(22 × 51) = √(1122) = 33.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

Find the mean proportional between 24 and 32.

A. 54

B. 30

C. 27

D. 56

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Correct Answer: Option C

Explanation:
Mean proportional = √(24 × 32) = √(768) = 27.

This question belongs to: Maths Ratio and Proportion

Question #2

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

A. 6:6:6

B. 6:5:6

C. 5:5:7

D. 12:10:12

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Correct Answer: Option B

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

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in the ratio 12:11 and their sum is 394. Find the numbers.

A. 192 and 204

B. 204 and 187

C. 408 and 374

D. 222 and 159

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Correct Answer: Option B

Explanation:
Numbers = 12k and 11k. 12k + 11k = 394 ⇒ k = 17. Thus, numbers are 204 and 187.

This question belongs to: Maths Ratio and Proportion

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