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Finding the Fourth Proportional to 324.46, 447.99 and 249.96

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Solution

The fourth proportional to 324.46, 447.99 and 249.96 is: 345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.46 : 447.99 = 249.96 : x
  2. Step 2: Convert to fraction form
    324.46/447.99 = 249.96/x
  3. Step 3: Cross multiply
    324.46x = 447.99 × 249.96
  4. Step 4: Simplify right side
    324.46x = 111,979.58
  5. Step 5: Solve for x
    x = 111,979.58/324.46
  6. Step 6: Final answer
    x = 345.13

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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.