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Finding the Fourth Proportional to 778.44, 1,167.12 and 367.38

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Solution

The fourth proportional to 778.44, 1,167.12 and 367.38 is: 550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    778.44 : 1,167.12 = 367.38 : x
  2. Step 2: Convert to fraction form
    778.44/1,167.12 = 367.38/x
  3. Step 3: Cross multiply
    778.44x = 1,167.12 × 367.38
  4. Step 4: Simplify right side
    778.44x = 428,776.55
  5. Step 5: Solve for x
    x = 428,776.55/778.44
  6. Step 6: Final answer
    x = 550.82

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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.