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Finding the Fourth Proportional to 396.32, 590.19 and 372.73

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Solution

The fourth proportional to 396.32, 590.19 and 372.73 is: 555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.32 : 590.19 = 372.73 : x
  2. Step 2: Convert to fraction form
    396.32/590.19 = 372.73/x
  3. Step 3: Cross multiply
    396.32x = 590.19 × 372.73
  4. Step 4: Simplify right side
    396.32x = 219,978.09
  5. Step 5: Solve for x
    x = 219,978.09/396.32
  6. Step 6: Final answer
    x = 555.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.