Question

The fourth proportional to 90,30,60
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Answer 1

Answer:

From Proportionality theorem

90/30=60/x

x=60×30/90

x=20

Answer 2

Answer:

the fourth proportion is 20.

Step-by-step explanation:

let the fourth proportion be x

according to question

90:30 :: 60:x

90/30 = 60/x

90x = 30 × 60

90x = 180

x = 1800/90

x = 20