Find the unknown term of the proportion: 0,9/15=0,3/x

tragikovas 2022-09-13 Answered
Find the unknown term of the proportion: 0,9/15=0,3/x
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Answers (1)

cerfweddrq
Answered 2022-09-14 Author has 15 answers
proportion rule; the product of the extreme terms of the proportion is equal to the product of the middle terms of the proportion; a and d are extreme; b and c are averages; a/b=c/d; => a•d=b•c; we multiply according to the rule with a cross;
Find the unknown term of the proportion:
0.9/15=0.3/x,
0.9•х=15•0.3
0.9x=4.5
X=4.5:0.9
X=5
Examination
0.9/15=0.3/X
0.06= 0.3/5
0.06=0.06

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