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Finding the Fourth Proportional to 198.87, 298.45 and 96.14

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Solution

The fourth proportional to 198.87, 298.45 and 96.14 is: 144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.87 : 298.45 = 96.14 : x
  2. Step 2: Convert to fraction form
    198.87/298.45 = 96.14/x
  3. Step 3: Cross multiply
    198.87x = 298.45 × 96.14
  4. Step 4: Simplify right side
    198.87x = 28,691.61
  5. Step 5: Solve for x
    x = 28,691.61/198.87
  6. Step 6: Final answer
    x = 144.27

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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.