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Finding the Fourth Proportional to 396.90, 594.63 and 201.69

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Solution

The fourth proportional to 396.90, 594.63 and 201.69 is: 302.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.90 : 594.63 = 201.69 : x
  2. Step 2: Convert to fraction form
    396.90/594.63 = 201.69/x
  3. Step 3: Cross multiply
    396.90x = 594.63 × 201.69
  4. Step 4: Simplify right side
    396.90x = 119,930.92
  5. Step 5: Solve for x
    x = 119,930.92/396.90
  6. Step 6: Final answer
    x = 302.17

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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.