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Finding the Fourth Proportional to 447.69, 672.03 and 338.34

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Solution

The fourth proportional to 447.69, 672.03 and 338.34 is: 507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.69 : 672.03 = 338.34 : x
  2. Step 2: Convert to fraction form
    447.69/672.03 = 338.34/x
  3. Step 3: Cross multiply
    447.69x = 672.03 × 338.34
  4. Step 4: Simplify right side
    447.69x = 227,374.63
  5. Step 5: Solve for x
    x = 227,374.63/447.69
  6. Step 6: Final answer
    x = 507.88

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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.