Wetzel

Math 155

6.4 – Ratio, Proportion, and Variation

What is a percent?

            Complete the table.

            Percent             Decimal            Fraction

               25%                 .25                  

               .36                ______              ______

              _____               .045                ______

              _____            ______                

What is a ratio?

What is a proportion?

            To Solve:   Cross-Multiply

            1.)  Multiply one numerator by the opposite denominator.

            2.)  Set that equal to the other numerator multiplied by the other deonominator.

            3.)  Solve the remaining equation.

Ex.:

1.)                                2.) 

HW:  p.338 #1-11odd, 23-27odd