The length and breadth of a school ground are 150m and 90m respectively, while the length and breadth of a mela ground are 210m and 126m, respectively. Are these measurements in proportion?
If the ratio of length to breadth of both school ground and mela are equal then they are said to be in proportion
Length of school ground = 150 m
Breadth of school ground = 90 m
⇒ ratio = 
= 
Divide the numerator and denominator by 30
⇒ ratio of length to breadth of school ground = 
…(i)
Length of mela = 210 m
Breadth of mela= 126 m
⇒ ratio = 
= 
Divide the numerator and denominator by 6
⇒ ratio = 
Divide the numerator and denominator by 7
⇒ ratio of length to breadth of mela = 
…(ii)
From (i) and (ii) we can say that measurements are in proportion
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