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Finding the Fourth Proportional to 372.10, 558.15 and 235.30

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Solution

The fourth proportional to 372.10, 558.15 and 235.30 is: 352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.10 : 558.15 = 235.30 : x
  2. Step 2: Convert to fraction form
    372.10/558.15 = 235.30/x
  3. Step 3: Cross multiply
    372.10x = 558.15 × 235.30
  4. Step 4: Simplify right side
    372.10x = 131,332.70
  5. Step 5: Solve for x
    x = 131,332.70/372.10
  6. Step 6: Final answer
    x = 352.95

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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.