Question

Find the fourth proportional to 4 , 7, 20

Answer 1

Answer:

x=35

Step-by-step explanation:

4:7::20:x

let the fourth proportional number be x

as we know to find the proportion we multiply extreme(1st and 4th)terms and middle terms to each other.

Here,

4x=140(following the above rule)

x=140/4

x=35

hence ur answer is x=35

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Answer 2

Answer:

35.

Explanation:

Let the fourth proportional to be x.

4:7::20:x

4×x=7×20

x=7×20

4

We cut off so we will get =7×5=35

so, X = 35

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