Sainik School Entrance Exam 2021 Solved Paper

Question : 135 of 150

Marks: +1, -0

Find the fourth proportional of 4,5 and 16 .

Solution:

(d) Let fourth proportional of 4,5 and 16 is

x

{4}/{5}={16}/{x} ⇒x={16×5}/{4}=20

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