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Finding the Fourth Proportional to 178.73, 268.50 and 144.71

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Solution

The fourth proportional to 178.73, 268.50 and 144.71 is: 217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.73 : 268.50 = 144.71 : x
  2. Step 2: Convert to fraction form
    178.73/268.50 = 144.71/x
  3. Step 3: Cross multiply
    178.73x = 268.50 × 144.71
  4. Step 4: Simplify right side
    178.73x = 38,854.64
  5. Step 5: Solve for x
    x = 38,854.64/178.73
  6. Step 6: Final answer
    x = 217.39

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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.