Home / 728-812

Finding the Third Proportional to 728 and 812

Calculator

Solution

The third proportional to 728 and 812 is: 905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    728 : 812 = 812 : x
  2. Step 2: Convert to fraction form
    728/812 = 812/x
  3. Step 3: Cross multiply
    728x = 812 × 812
  4. Step 4: Simplify right side
    728x = 659,344
  5. Step 5: Solve for x
    x = 659,344/728
  6. Step 6: Final answer
    x = 905.69

Related Problems

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.