Home / 515-655

Finding the Third Proportional to 515 and 655

Calculator

Solution

The third proportional to 515 and 655 is: 833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    515 : 655 = 655 : x
  2. Step 2: Convert to fraction form
    515/655 = 655/x
  3. Step 3: Cross multiply
    515x = 655 × 655
  4. Step 4: Simplify right side
    515x = 429,025
  5. Step 5: Solve for x
    x = 429,025/515
  6. Step 6: Final answer
    x = 833.06

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.