Home / 480.75-721.13

Finding the Third Proportional to 480.75 and 721.13

Calculator

Solution

The third proportional to 480.75 and 721.13 is: 1,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.75 : 721.13 = 721.13 : x
  2. Step 2: Convert to fraction form
    480.75/721.13 = 721.13/x
  3. Step 3: Cross multiply
    480.75x = 721.13 × 721.13
  4. Step 4: Simplify right side
    480.75x = 520,021.27
  5. Step 5: Solve for x
    x = 520,021.27/480.75
  6. Step 6: Final answer
    x = 1,081.69

Related Problems

Find third proportional to 240.38 and 360.56
Half scale
Find third proportional to 961.50 and 1,442.25
Double scale
Find third proportional to 483 and 724
Similar ratio
Find third proportional to 721.13 and 1,081.69
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.