Finding the Third Proportional to 504 and 645
Calculator
Solution
The third proportional to 504 and 645 is: 825.45
Step by Step Solution
- Step 1: Write the proportion equation
504 : 645 = 645 : x - Step 2: Convert to fraction form
504/645 = 645/x - Step 3: Cross multiply
504x = 645 × 645 - Step 4: Simplify right side
504x = 416,025 - Step 5: Solve for x
x = 416,025/504 - Step 6: Final answer
x = 825.45
Related Problems
Find third proportional to 252 and 322.50
Half scale
Find third proportional to 1,008 and 1,290
Double scale
Find third proportional to 506 and 648
Similar ratio
Find third proportional to 756 and 967.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.