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Finding the Fourth Proportional to 480.46, 721.04 and 326.02

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Solution

The fourth proportional to 480.46, 721.04 and 326.02 is: 489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.46 : 721.04 = 326.02 : x
  2. Step 2: Convert to fraction form
    480.46/721.04 = 326.02/x
  3. Step 3: Cross multiply
    480.46x = 721.04 × 326.02
  4. Step 4: Simplify right side
    480.46x = 235,073.46
  5. Step 5: Solve for x
    x = 235,073.46/480.46
  6. Step 6: Final answer
    x = 489.27

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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.