Are the ratios Start Fraction 25 over 45 End Fraction and Start Fraction 15 over 27 End Fraction proportional?
25/45 and 15/27 ?
(25/5) / (45/5) = 5/9
(15/3) / (27/3) = 5/9
so
The two fractions are the same.
25/45 = 5/9
15/27 = 5/9
Thanks so much!
You are welcome.
Practice factoring !
To check if two ratios are proportional, we need to compare their cross products.
The cross products of the ratios Start Fraction 25 over 45 End Fraction and Start Fraction 15 over 27 End Fraction are:
(25 * 27) and (45 * 15)
Calculating these values, we get:
675 and 675
Since the cross products of both ratios are equal, we can conclude that the ratios Start Fraction 25 over 45 End Fraction and Start Fraction 15 over 27 End Fraction are proportional.