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Finding the Fourth Proportional to 227.52, 314.16 and 217.92

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Solution

The fourth proportional to 227.52, 314.16 and 217.92 is: 300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.52 : 314.16 = 217.92 : x
  2. Step 2: Convert to fraction form
    227.52/314.16 = 217.92/x
  3. Step 3: Cross multiply
    227.52x = 314.16 × 217.92
  4. Step 4: Simplify right side
    227.52x = 68,461.75
  5. Step 5: Solve for x
    x = 68,461.75/227.52
  6. Step 6: Final answer
    x = 300.90

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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.