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Finding the Fourth Proportional to 563.91, 778.15 and 327.86

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Solution

The fourth proportional to 563.91, 778.15 and 327.86 is: 452.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.91 : 778.15 = 327.86 : x
  2. Step 2: Convert to fraction form
    563.91/778.15 = 327.86/x
  3. Step 3: Cross multiply
    563.91x = 778.15 × 327.86
  4. Step 4: Simplify right side
    563.91x = 255,125.38
  5. Step 5: Solve for x
    x = 255,125.38/563.91
  6. Step 6: Final answer
    x = 452.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.