Home / 557-809.75

Finding the Third Proportional to 557 and 809.75

Calculator

Solution

The third proportional to 557 and 809.75 is: 1,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557 : 809.75 = 809.75 : x
  2. Step 2: Convert to fraction form
    557/809.75 = 809.75/x
  3. Step 3: Cross multiply
    557x = 809.75 × 809.75
  4. Step 4: Simplify right side
    557x = 655,695.06
  5. Step 5: Solve for x
    x = 655,695.06/557
  6. Step 6: Final answer
    x = 1,177.19

Related Problems

Find third proportional to 278.50 and 404.88
Half scale
Find third proportional to 1,114 and 1,619.50
Double scale
Find third proportional to 559 and 813
Similar ratio
Find third proportional to 835.50 and 1,214.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.