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Finding the Fourth Proportional to 204.18, 306.12 and 88.68

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Solution

The fourth proportional to 204.18, 306.12 and 88.68 is: 132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.18 : 306.12 = 88.68 : x
  2. Step 2: Convert to fraction form
    204.18/306.12 = 88.68/x
  3. Step 3: Cross multiply
    204.18x = 306.12 × 88.68
  4. Step 4: Simplify right side
    204.18x = 27,146.72
  5. Step 5: Solve for x
    x = 27,146.72/204.18
  6. Step 6: Final answer
    x = 132.95

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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.