Ratio And Proportion - XtraStudy Ratio And Proportion Aptitude Questions and Answers

⁞ Ratio And Proportion

Aptitude ➤ Ratio And Proportion ➤ 1

Question 1

Q1. The fourth proportional to 5, 8, 15 is

12

24

30

16

Answer : 24

Let the fourth proportional to 5, 8, 15 be x.
Then, 5 : 8 :: 15 : x
⇒ 5x = (8 x 15)
⇒ x = (8 x 15)/5 = 120/5 = 24.
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