Finding the Third Proportional to 609 and 664.50
Calculator
Solution
The third proportional to 609 and 664.50 is: 725.06
Step by Step Solution
- Step 1: Write the proportion equation
609 : 664.50 = 664.50 : x - Step 2: Convert to fraction form
609/664.50 = 664.50/x - Step 3: Cross multiply
609x = 664.50 × 664.50 - Step 4: Simplify right side
609x = 441,560.25 - Step 5: Solve for x
x = 441,560.25/609 - Step 6: Final answer
x = 725.06
Related Problems
Find third proportional to 304.50 and 332.25
Half scale
Find third proportional to 1,218 and 1,329
Double scale
Find third proportional to 611 and 667
Similar ratio
Find third proportional to 913.50 and 996.75
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.