Finding the Third Proportional to 513 and 655
Calculator
Solution
The third proportional to 513 and 655 is: 836.31
Step by Step Solution
- Step 1: Write the proportion equation
513 : 655 = 655 : x - Step 2: Convert to fraction form
513/655 = 655/x - Step 3: Cross multiply
513x = 655 × 655 - Step 4: Simplify right side
513x = 429,025 - Step 5: Solve for x
x = 429,025/513 - Step 6: Final answer
x = 836.31
Related Problems
Find third proportional to 256.50 and 327.50
Half scale
Find third proportional to 1,026 and 1,310
Double scale
Find third proportional to 515 and 658
Similar ratio
Find third proportional to 769.50 and 982.50
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.