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Finding the Fourth Proportional to 396.88, 594.96 and 275.20

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Solution

The fourth proportional to 396.88, 594.96 and 275.20 is: 412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.88 : 594.96 = 275.20 : x
  2. Step 2: Convert to fraction form
    396.88/594.96 = 275.20/x
  3. Step 3: Cross multiply
    396.88x = 594.96 × 275.20
  4. Step 4: Simplify right side
    396.88x = 163,732.99
  5. Step 5: Solve for x
    x = 163,732.99/396.88
  6. Step 6: Final answer
    x = 412.55

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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.