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Finding the Fourth Proportional to 489.39, 733.89 and 229.33

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Solution

The fourth proportional to 489.39, 733.89 and 229.33 is: 343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.39 : 733.89 = 229.33 : x
  2. Step 2: Convert to fraction form
    489.39/733.89 = 229.33/x
  3. Step 3: Cross multiply
    489.39x = 733.89 × 229.33
  4. Step 4: Simplify right side
    489.39x = 168,302.84
  5. Step 5: Solve for x
    x = 168,302.84/489.39
  6. Step 6: Final answer
    x = 343.90

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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.