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Finding the Fourth Proportional to 396.88, 594.60 and 191.44

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Solution

The fourth proportional to 396.88, 594.60 and 191.44 is: 286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.88 : 594.60 = 191.44 : x
  2. Step 2: Convert to fraction form
    396.88/594.60 = 191.44/x
  3. Step 3: Cross multiply
    396.88x = 594.60 × 191.44
  4. Step 4: Simplify right side
    396.88x = 113,830.22
  5. Step 5: Solve for x
    x = 113,830.22/396.88
  6. Step 6: Final answer
    x = 286.81

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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.