Home / 108.28-256.92

Finding the Third Proportional to 108.28 and 256.92

Calculator

Solution

The third proportional to 108.28 and 256.92 is: 609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.28 : 256.92 = 256.92 : x
  2. Step 2: Convert to fraction form
    108.28/256.92 = 256.92/x
  3. Step 3: Cross multiply
    108.28x = 256.92 × 256.92
  4. Step 4: Simplify right side
    108.28x = 66,008.85
  5. Step 5: Solve for x
    x = 66,008.85/108.28
  6. Step 6: Final answer
    x = 609.61

Related Problems

Find third proportional to 54.14 and 128.46
Half scale
Find third proportional to 216.56 and 513.84
Double scale
Find third proportional to 110 and 262
Similar ratio
Find third proportional to 162.42 and 385.38
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.