Home / 217.38-326.15-80.52

Finding the Fourth Proportional to 217.38, 326.15 and 80.52

Calculator

Solution

The fourth proportional to 217.38, 326.15 and 80.52 is: 120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.38 : 326.15 = 80.52 : x
  2. Step 2: Convert to fraction form
    217.38/326.15 = 80.52/x
  3. Step 3: Cross multiply
    217.38x = 326.15 × 80.52
  4. Step 4: Simplify right side
    217.38x = 26,261.20
  5. Step 5: Solve for x
    x = 26,261.20/217.38
  6. Step 6: Final answer
    x = 120.81

Related Problems

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.