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Finding the Fourth Proportional to 489.10, 732.96 and 283.61

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Solution

The fourth proportional to 489.10, 732.96 and 283.61 is: 425.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.10 : 732.96 = 283.61 : x
  2. Step 2: Convert to fraction form
    489.10/732.96 = 283.61/x
  3. Step 3: Cross multiply
    489.10x = 732.96 × 283.61
  4. Step 4: Simplify right side
    489.10x = 207,876.62
  5. Step 5: Solve for x
    x = 207,876.62/489.10
  6. Step 6: Final answer
    x = 425.02

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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.