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Finding the Fourth Proportional to 447.92, 673.08 and 391.48

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Solution

The fourth proportional to 447.92, 673.08 and 391.48 is: 588.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.92 : 673.08 = 391.48 : x
  2. Step 2: Convert to fraction form
    447.92/673.08 = 391.48/x
  3. Step 3: Cross multiply
    447.92x = 673.08 × 391.48
  4. Step 4: Simplify right side
    447.92x = 263,497.36
  5. Step 5: Solve for x
    x = 263,497.36/447.92
  6. Step 6: Final answer
    x = 588.27

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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.