Finding the Third Proportional to 576 and 645
Calculator
Solution
The third proportional to 576 and 645 is: 722.27
Step by Step Solution
- Step 1: Write the proportion equation
576 : 645 = 645 : x - Step 2: Convert to fraction form
576/645 = 645/x - Step 3: Cross multiply
576x = 645 × 645 - Step 4: Simplify right side
576x = 416,025 - Step 5: Solve for x
x = 416,025/576 - Step 6: Final answer
x = 722.27
Related Problems
Find third proportional to 288 and 322.50
Half scale
Find third proportional to 1,152 and 1,290
Double scale
Find third proportional to 578 and 647
Similar ratio
Find third proportional to 864 and 967.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.