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Finding the Fourth Proportional to 451.92, 679.08 and 395.48

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Solution

The fourth proportional to 451.92, 679.08 and 395.48 is: 594.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.92 : 679.08 = 395.48 : x
  2. Step 2: Convert to fraction form
    451.92/679.08 = 395.48/x
  3. Step 3: Cross multiply
    451.92x = 679.08 × 395.48
  4. Step 4: Simplify right side
    451.92x = 268,562.56
  5. Step 5: Solve for x
    x = 268,562.56/451.92
  6. Step 6: Final answer
    x = 594.27

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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.