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Finding the Fourth Proportional to 372.20, 558.50 and 189.14

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Solution

The fourth proportional to 372.20, 558.50 and 189.14 is: 283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.20 : 558.50 = 189.14 : x
  2. Step 2: Convert to fraction form
    372.20/558.50 = 189.14/x
  3. Step 3: Cross multiply
    372.20x = 558.50 × 189.14
  4. Step 4: Simplify right side
    372.20x = 105,630.95
  5. Step 5: Solve for x
    x = 105,630.95/372.20
  6. Step 6: Final answer
    x = 283.81

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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.