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Finding the Fourth Proportional to 392.56, 587.22 and 327.04

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Solution

The fourth proportional to 392.56, 587.22 and 327.04 is: 489.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.56 : 587.22 = 327.04 : x
  2. Step 2: Convert to fraction form
    392.56/587.22 = 327.04/x
  3. Step 3: Cross multiply
    392.56x = 587.22 × 327.04
  4. Step 4: Simplify right side
    392.56x = 192,044.43
  5. Step 5: Solve for x
    x = 192,044.43/392.56
  6. Step 6: Final answer
    x = 489.21

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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.