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Finding the Fourth Proportional to 396.44, 546.91 and 263.73

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Solution

The fourth proportional to 396.44, 546.91 and 263.73 is: 363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.44 : 546.91 = 263.73 : x
  2. Step 2: Convert to fraction form
    396.44/546.91 = 263.73/x
  3. Step 3: Cross multiply
    396.44x = 546.91 × 263.73
  4. Step 4: Simplify right side
    396.44x = 144,237.97
  5. Step 5: Solve for x
    x = 144,237.97/396.44
  6. Step 6: Final answer
    x = 363.83

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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.