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Finding the Fourth Proportional to 439.91, 660.05 and 234.23

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Solution

The fourth proportional to 439.91, 660.05 and 234.23 is: 351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.91 : 660.05 = 234.23 : x
  2. Step 2: Convert to fraction form
    439.91/660.05 = 234.23/x
  3. Step 3: Cross multiply
    439.91x = 660.05 × 234.23
  4. Step 4: Simplify right side
    439.91x = 154,602.70
  5. Step 5: Solve for x
    x = 154,602.70/439.91
  6. Step 6: Final answer
    x = 351.44

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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.