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Finding the Fourth Proportional to 633.27, 873.85 and 353.49

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Solution

The fourth proportional to 633.27, 873.85 and 353.49 is: 487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.27 : 873.85 = 353.49 : x
  2. Step 2: Convert to fraction form
    633.27/873.85 = 353.49/x
  3. Step 3: Cross multiply
    633.27x = 873.85 × 353.49
  4. Step 4: Simplify right side
    633.27x = 308,897.24
  5. Step 5: Solve for x
    x = 308,897.24/633.27
  6. Step 6: Final answer
    x = 487.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.