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Finding the Fourth Proportional to 217.94, 327.08 and 192.31

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Solution

The fourth proportional to 217.94, 327.08 and 192.31 is: 288.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.94 : 327.08 = 192.31 : x
  2. Step 2: Convert to fraction form
    217.94/327.08 = 192.31/x
  3. Step 3: Cross multiply
    217.94x = 327.08 × 192.31
  4. Step 4: Simplify right side
    217.94x = 62,898.16
  5. Step 5: Solve for x
    x = 62,898.16/217.94
  6. Step 6: Final answer
    x = 288.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.