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Finding the Fourth Proportional to 238.73, 330.35 and 203.71

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Solution

The fourth proportional to 238.73, 330.35 and 203.71 is: 281.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.73 : 330.35 = 203.71 : x
  2. Step 2: Convert to fraction form
    238.73/330.35 = 203.71/x
  3. Step 3: Cross multiply
    238.73x = 330.35 × 203.71
  4. Step 4: Simplify right side
    238.73x = 67,293.95
  5. Step 5: Solve for x
    x = 67,293.95/238.73
  6. Step 6: Final answer
    x = 281.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.