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Finding the Fourth Proportional to 358.12, 535.97 and 327.31

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Solution

The fourth proportional to 358.12, 535.97 and 327.31 is: 489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.12 : 535.97 = 327.31 : x
  2. Step 2: Convert to fraction form
    358.12/535.97 = 327.31/x
  3. Step 3: Cross multiply
    358.12x = 535.97 × 327.31
  4. Step 4: Simplify right side
    358.12x = 175,425.98
  5. Step 5: Solve for x
    x = 175,425.98/358.12
  6. Step 6: Final answer
    x = 489.85

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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.