SOLUTION: HI I NEED HELP WITH A QUESTION I DON;T KNOW TO REACH THE CONCLSUION I KNOW NOTHING ABOUT PROPORTIONS THE QUESTION IS SOLVE THE X IN THE FOLLOWING 3:80::X:150.

Algebra ->  Proportions -> SOLUTION: HI I NEED HELP WITH A QUESTION I DON;T KNOW TO REACH THE CONCLSUION I KNOW NOTHING ABOUT PROPORTIONS THE QUESTION IS SOLVE THE X IN THE FOLLOWING 3:80::X:150.      Log On


   

Question 426586: HI I NEED HELP WITH A QUESTION I DON;T KNOW TO REACH THE CONCLSUION I KNOW NOTHING ABOUT PROPORTIONS THE QUESTION IS
SOLVE THE X IN THE FOLLOWING 3:80::X:150.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
3:80::X:150
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3/80 = x/150
Cross multiply
80x = 450
x = 45/8
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You can also multiply and equate "means and extremes" in the ratio. Means are the 2 inner terms, extremes are the 2 outer.
80*x = 3*150 same thing