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Finding the Fourth Proportional to 379.38, 523.62 and 324.36

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Solution

The fourth proportional to 379.38, 523.62 and 324.36 is: 447.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.38 : 523.62 = 324.36 : x
  2. Step 2: Convert to fraction form
    379.38/523.62 = 324.36/x
  3. Step 3: Cross multiply
    379.38x = 523.62 × 324.36
  4. Step 4: Simplify right side
    379.38x = 169,841.38
  5. Step 5: Solve for x
    x = 169,841.38/379.38
  6. Step 6: Final answer
    x = 447.68

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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.