Home / 477.49-561.87

Finding the Third Proportional to 477.49 and 561.87

Calculator

Solution

The third proportional to 477.49 and 561.87 is: 661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.49 : 561.87 = 561.87 : x
  2. Step 2: Convert to fraction form
    477.49/561.87 = 561.87/x
  3. Step 3: Cross multiply
    477.49x = 561.87 × 561.87
  4. Step 4: Simplify right side
    477.49x = 315,694.74
  5. Step 5: Solve for x
    x = 315,694.74/477.49
  6. Step 6: Final answer
    x = 661.15

Related Problems

Find third proportional to 238.75 and 280.93
Half scale
Find third proportional to 954.98 and 1,123.73
Double scale
Find third proportional to 479 and 564
Similar ratio
Find third proportional to 716.24 and 842.80
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.