Home / 372.22-557.82-128.52

Finding the Fourth Proportional to 372.22, 557.82 and 128.52

Calculator

Solution

The fourth proportional to 372.22, 557.82 and 128.52 is: 192.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.22 : 557.82 = 128.52 : x
  2. Step 2: Convert to fraction form
    372.22/557.82 = 128.52/x
  3. Step 3: Cross multiply
    372.22x = 557.82 × 128.52
  4. Step 4: Simplify right side
    372.22x = 71,691.03
  5. Step 5: Solve for x
    x = 71,691.03/372.22
  6. Step 6: Final answer
    x = 192.61

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.