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Finding the Fourth Proportional to 449.26, 673.28 and 232.40

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Solution

The fourth proportional to 449.26, 673.28 and 232.40 is: 348.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.26 : 673.28 = 232.40 : x
  2. Step 2: Convert to fraction form
    449.26/673.28 = 232.40/x
  3. Step 3: Cross multiply
    449.26x = 673.28 × 232.40
  4. Step 4: Simplify right side
    449.26x = 156,470.27
  5. Step 5: Solve for x
    x = 156,470.27/449.26
  6. Step 6: Final answer
    x = 348.28

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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.