Home / 447.38-613.13

Finding the Third Proportional to 447.38 and 613.13

Calculator

Solution

The third proportional to 447.38 and 613.13 is: 840.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.38 : 613.13 = 613.13 : x
  2. Step 2: Convert to fraction form
    447.38/613.13 = 613.13/x
  3. Step 3: Cross multiply
    447.38x = 613.13 × 613.13
  4. Step 4: Simplify right side
    447.38x = 375,922.27
  5. Step 5: Solve for x
    x = 375,922.27/447.38
  6. Step 6: Final answer
    x = 840.28

Related Problems

Find third proportional to 223.69 and 306.56
Half scale
Find third proportional to 894.75 and 1,226.25
Double scale
Find third proportional to 449 and 616
Similar ratio
Find third proportional to 671.06 and 919.69
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.