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Finding the Fourth Proportional to 408.74, 563.96 and 234.08

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Solution

The fourth proportional to 408.74, 563.96 and 234.08 is: 322.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.74 : 563.96 = 234.08 : x
  2. Step 2: Convert to fraction form
    408.74/563.96 = 234.08/x
  3. Step 3: Cross multiply
    408.74x = 563.96 × 234.08
  4. Step 4: Simplify right side
    408.74x = 132,011.76
  5. Step 5: Solve for x
    x = 132,011.76/408.74
  6. Step 6: Final answer
    x = 322.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.