Home / 481.81-721.38

Finding the Third Proportional to 481.81 and 721.38

Calculator

Solution

The third proportional to 481.81 and 721.38 is: 1,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.81 : 721.38 = 721.38 : x
  2. Step 2: Convert to fraction form
    481.81/721.38 = 721.38/x
  3. Step 3: Cross multiply
    481.81x = 721.38 × 721.38
  4. Step 4: Simplify right side
    481.81x = 520,381.89
  5. Step 5: Solve for x
    x = 520,381.89/481.81
  6. Step 6: Final answer
    x = 1,080.05

Related Problems

Find third proportional to 240.91 and 360.69
Half scale
Find third proportional to 963.63 and 1,442.75
Double scale
Find third proportional to 484 and 724
Similar ratio
Find third proportional to 722.72 and 1,082.06
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.