Home / 539.79-809.68

Finding the Third Proportional to 539.79 and 809.68

Calculator

Solution

The third proportional to 539.79 and 809.68 is: 1,214.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.79 : 809.68 = 809.68 : x
  2. Step 2: Convert to fraction form
    539.79/809.68 = 809.68/x
  3. Step 3: Cross multiply
    539.79x = 809.68 × 809.68
  4. Step 4: Simplify right side
    539.79x = 655,587.52
  5. Step 5: Solve for x
    x = 655,587.52/539.79
  6. Step 6: Final answer
    x = 1,214.53

Related Problems

Find third proportional to 269.89 and 404.84
Half scale
Find third proportional to 1,079.58 and 1,619.37
Double scale
Find third proportional to 542 and 813
Similar ratio
Find third proportional to 809.68 and 1,214.53
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.