Home / 761-813

Finding the Third Proportional to 761 and 813

Calculator

Solution

The third proportional to 761 and 813 is: 868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    761 : 813 = 813 : x
  2. Step 2: Convert to fraction form
    761/813 = 813/x
  3. Step 3: Cross multiply
    761x = 813 × 813
  4. Step 4: Simplify right side
    761x = 660,969
  5. Step 5: Solve for x
    x = 660,969/761
  6. Step 6: Final answer
    x = 868.55

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.