Question

Find the fourth proportional to ​

Answer 1

we all know that product of means = product of extremes...

now, 5/2x= 5/4 × 2.2

2.5x= 1.25× 2.2

2.5x = 2.75

x = 2.75÷ 2.5 = 1.1.

answer 1.1

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