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Finding the Fourth Proportional to 396.66, 595.80 and 305.55

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Solution

The fourth proportional to 396.66, 595.80 and 305.55 is: 458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.66 : 595.80 = 305.55 : x
  2. Step 2: Convert to fraction form
    396.66/595.80 = 305.55/x
  3. Step 3: Cross multiply
    396.66x = 595.80 × 305.55
  4. Step 4: Simplify right side
    396.66x = 182,046.69
  5. Step 5: Solve for x
    x = 182,046.69/396.66
  6. Step 6: Final answer
    x = 458.95

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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.