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Finding the Fourth Proportional to 204.97, 306.87 and 118.15

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Solution

The fourth proportional to 204.97, 306.87 and 118.15 is: 176.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.97 : 306.87 = 118.15 : x
  2. Step 2: Convert to fraction form
    204.97/306.87 = 118.15/x
  3. Step 3: Cross multiply
    204.97x = 306.87 × 118.15
  4. Step 4: Simplify right side
    204.97x = 36,255.16
  5. Step 5: Solve for x
    x = 36,255.16/204.97
  6. Step 6: Final answer
    x = 176.88

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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.