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Finding the Fourth Proportional to 354.56, 532.08 and 149.31

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Solution

The fourth proportional to 354.56, 532.08 and 149.31 is: 224.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.56 : 532.08 = 149.31 : x
  2. Step 2: Convert to fraction form
    354.56/532.08 = 149.31/x
  3. Step 3: Cross multiply
    354.56x = 532.08 × 149.31
  4. Step 4: Simplify right side
    354.56x = 79,444.86
  5. Step 5: Solve for x
    x = 79,444.86/354.56
  6. Step 6: Final answer
    x = 224.07

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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.