Home / 254.38-381.56

Finding the Third Proportional to 254.38 and 381.56

Calculator

Solution

The third proportional to 254.38 and 381.56 is: 572.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.38 : 381.56 = 381.56 : x
  2. Step 2: Convert to fraction form
    254.38/381.56 = 381.56/x
  3. Step 3: Cross multiply
    254.38x = 381.56 × 381.56
  4. Step 4: Simplify right side
    254.38x = 145,589.94
  5. Step 5: Solve for x
    x = 145,589.94/254.38
  6. Step 6: Final answer
    x = 572.34

Related Problems

Find third proportional to 127.19 and 190.78
Half scale
Find third proportional to 508.75 and 763.13
Double scale
Find third proportional to 256 and 385
Similar ratio
Find third proportional to 381.56 and 572.34
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.