Finding the Third Proportional to 491 and 660.50
Calculator
Solution
The third proportional to 491 and 660.50 is: 888.51
Step by Step Solution
- Step 1: Write the proportion equation
491 : 660.50 = 660.50 : x - Step 2: Convert to fraction form
491/660.50 = 660.50/x - Step 3: Cross multiply
491x = 660.50 × 660.50 - Step 4: Simplify right side
491x = 436,260.25 - Step 5: Solve for x
x = 436,260.25/491 - Step 6: Final answer
x = 888.51
Related Problems
Find third proportional to 245.50 and 330.25
Half scale
Find third proportional to 982 and 1,321
Double scale
Find third proportional to 493 and 663
Similar ratio
Find third proportional to 736.50 and 990.75
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.