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Finding the Fourth Proportional to 635.61, 953.88 and 327.72

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Solution

The fourth proportional to 635.61, 953.88 and 327.72 is: 491.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.61 : 953.88 = 327.72 : x
  2. Step 2: Convert to fraction form
    635.61/953.88 = 327.72/x
  3. Step 3: Cross multiply
    635.61x = 953.88 × 327.72
  4. Step 4: Simplify right side
    635.61x = 312,605.55
  5. Step 5: Solve for x
    x = 312,605.55/635.61
  6. Step 6: Final answer
    x = 491.82

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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.