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Finding the Fourth Proportional to 372.46, 558.21 and 326.89

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Solution

The fourth proportional to 372.46, 558.21 and 326.89 is: 489.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.46 : 558.21 = 326.89 : x
  2. Step 2: Convert to fraction form
    372.46/558.21 = 326.89/x
  3. Step 3: Cross multiply
    372.46x = 558.21 × 326.89
  4. Step 4: Simplify right side
    372.46x = 182,473.27
  5. Step 5: Solve for x
    x = 182,473.27/372.46
  6. Step 6: Final answer
    x = 489.91

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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.