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Finding the Fourth Proportional to 229.17, 318.36 and 226.95

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Solution

The fourth proportional to 229.17, 318.36 and 226.95 is: 315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.17 : 318.36 = 226.95 : x
  2. Step 2: Convert to fraction form
    229.17/318.36 = 226.95/x
  3. Step 3: Cross multiply
    229.17x = 318.36 × 226.95
  4. Step 4: Simplify right side
    229.17x = 72,251.80
  5. Step 5: Solve for x
    x = 72,251.80/229.17
  6. Step 6: Final answer
    x = 315.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.