Home / 439.50-665.13

Finding the Third Proportional to 439.50 and 665.13

Calculator

Solution

The third proportional to 439.50 and 665.13 is: 1,006.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.50 : 665.13 = 665.13 : x
  2. Step 2: Convert to fraction form
    439.50/665.13 = 665.13/x
  3. Step 3: Cross multiply
    439.50x = 665.13 × 665.13
  4. Step 4: Simplify right side
    439.50x = 442,391.27
  5. Step 5: Solve for x
    x = 442,391.27/439.50
  6. Step 6: Final answer
    x = 1,006.58

Related Problems

Find third proportional to 219.75 and 332.56
Half scale
Find third proportional to 879 and 1,330.25
Double scale
Find third proportional to 442 and 668
Similar ratio
Find third proportional to 659.25 and 997.69
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.