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Finding the Fourth Proportional to 489.38, 733.95 and 181.26

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Solution

The fourth proportional to 489.38, 733.95 and 181.26 is: 271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.38 : 733.95 = 181.26 : x
  2. Step 2: Convert to fraction form
    489.38/733.95 = 181.26/x
  3. Step 3: Cross multiply
    489.38x = 733.95 × 181.26
  4. Step 4: Simplify right side
    489.38x = 133,035.78
  5. Step 5: Solve for x
    x = 133,035.78/489.38
  6. Step 6: Final answer
    x = 271.85

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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.