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Finding the Fourth Proportional to 396.21, 594.61 and 149.64

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Solution

The fourth proportional to 396.21, 594.61 and 149.64 is: 224.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.21 : 594.61 = 149.64 : x
  2. Step 2: Convert to fraction form
    396.21/594.61 = 149.64/x
  3. Step 3: Cross multiply
    396.21x = 594.61 × 149.64
  4. Step 4: Simplify right side
    396.21x = 88,977.07
  5. Step 5: Solve for x
    x = 88,977.07/396.21
  6. Step 6: Final answer
    x = 224.57

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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.