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Finding the Fourth Proportional to 396.55, 594.15 and 342.82

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Solution

The fourth proportional to 396.55, 594.15 and 342.82 is: 513.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.55 : 594.15 = 342.82 : x
  2. Step 2: Convert to fraction form
    396.55/594.15 = 342.82/x
  3. Step 3: Cross multiply
    396.55x = 594.15 × 342.82
  4. Step 4: Simplify right side
    396.55x = 203,686.50
  5. Step 5: Solve for x
    x = 203,686.50/396.55
  6. Step 6: Final answer
    x = 513.65

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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.