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Finding the Fourth Proportional to 490.12, 734.81 and 229.97

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Solution

The fourth proportional to 490.12, 734.81 and 229.97 is: 344.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.12 : 734.81 = 229.97 : x
  2. Step 2: Convert to fraction form
    490.12/734.81 = 229.97/x
  3. Step 3: Cross multiply
    490.12x = 734.81 × 229.97
  4. Step 4: Simplify right side
    490.12x = 168,984.94
  5. Step 5: Solve for x
    x = 168,984.94/490.12
  6. Step 6: Final answer
    x = 344.78

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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.