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Finding the Fourth Proportional to 635.22, 951.78 and 326.73

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Solution

The fourth proportional to 635.22, 951.78 and 326.73 is: 489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.22 : 951.78 = 326.73 : x
  2. Step 2: Convert to fraction form
    635.22/951.78 = 326.73/x
  3. Step 3: Cross multiply
    635.22x = 951.78 × 326.73
  4. Step 4: Simplify right side
    635.22x = 310,975.08
  5. Step 5: Solve for x
    x = 310,975.08/635.22
  6. Step 6: Final answer
    x = 489.55

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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.