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Finding the Fourth Proportional to 204.30, 281.79 and 178.38

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Solution

The fourth proportional to 204.30, 281.79 and 178.38 is: 246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.30 : 281.79 = 178.38 : x
  2. Step 2: Convert to fraction form
    204.30/281.79 = 178.38/x
  3. Step 3: Cross multiply
    204.30x = 281.79 × 178.38
  4. Step 4: Simplify right side
    204.30x = 50,265.70
  5. Step 5: Solve for x
    x = 50,265.70/204.30
  6. Step 6: Final answer
    x = 246.04

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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.