Home / 425.81-511.88

Finding the Third Proportional to 425.81 and 511.88

Calculator

Solution

The third proportional to 425.81 and 511.88 is: 615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.81 : 511.88 = 511.88 : x
  2. Step 2: Convert to fraction form
    425.81/511.88 = 511.88/x
  3. Step 3: Cross multiply
    425.81x = 511.88 × 511.88
  4. Step 4: Simplify right side
    425.81x = 262,016.02
  5. Step 5: Solve for x
    x = 262,016.02/425.81
  6. Step 6: Final answer
    x = 615.33

Related Problems

Find third proportional to 212.91 and 255.94
Half scale
Find third proportional to 851.63 and 1,023.75
Double scale
Find third proportional to 428 and 514
Similar ratio
Find third proportional to 638.72 and 767.81
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.