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Finding the Fourth Proportional to 482.91, 721.61 and 327.54

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Solution

The fourth proportional to 482.91, 721.61 and 327.54 is: 489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.91 : 721.61 = 327.54 : x
  2. Step 2: Convert to fraction form
    482.91/721.61 = 327.54/x
  3. Step 3: Cross multiply
    482.91x = 721.61 × 327.54
  4. Step 4: Simplify right side
    482.91x = 236,358.44
  5. Step 5: Solve for x
    x = 236,358.44/482.91
  6. Step 6: Final answer
    x = 489.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.