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Finding the Fourth Proportional to 396.51, 594.69 and 107.88

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Solution

The fourth proportional to 396.51, 594.69 and 107.88 is: 161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.51 : 594.69 = 107.88 : x
  2. Step 2: Convert to fraction form
    396.51/594.69 = 107.88/x
  3. Step 3: Cross multiply
    396.51x = 594.69 × 107.88
  4. Step 4: Simplify right side
    396.51x = 64,155.16
  5. Step 5: Solve for x
    x = 64,155.16/396.51
  6. Step 6: Final answer
    x = 161.80

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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.