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Finding the Fourth Proportional to 230.92, 345.57 and 217.96

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Solution

The fourth proportional to 230.92, 345.57 and 217.96 is: 326.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.92 : 345.57 = 217.96 : x
  2. Step 2: Convert to fraction form
    230.92/345.57 = 217.96/x
  3. Step 3: Cross multiply
    230.92x = 345.57 × 217.96
  4. Step 4: Simplify right side
    230.92x = 75,318.76
  5. Step 5: Solve for x
    x = 75,318.76/230.92
  6. Step 6: Final answer
    x = 326.17

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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.