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Finding the Fourth Proportional to 636.49, 952.89 and 327.61

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Solution

The fourth proportional to 636.49, 952.89 and 327.61 is: 490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.49 : 952.89 = 327.61 : x
  2. Step 2: Convert to fraction form
    636.49/952.89 = 327.61/x
  3. Step 3: Cross multiply
    636.49x = 952.89 × 327.61
  4. Step 4: Simplify right side
    636.49x = 312,176.29
  5. Step 5: Solve for x
    x = 312,176.29/636.49
  6. Step 6: Final answer
    x = 490.47

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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.