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Finding the Fourth Proportional to 396.56, 594.80 and 107.98

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Solution

The fourth proportional to 396.56, 594.80 and 107.98 is: 161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.56 : 594.80 = 107.98 : x
  2. Step 2: Convert to fraction form
    396.56/594.80 = 107.98/x
  3. Step 3: Cross multiply
    396.56x = 594.80 × 107.98
  4. Step 4: Simplify right side
    396.56x = 64,226.50
  5. Step 5: Solve for x
    x = 64,226.50/396.56
  6. Step 6: Final answer
    x = 161.96

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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.