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Finding the Fourth Proportional to 426.18, 587.52 and 327.78

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Solution

The fourth proportional to 426.18, 587.52 and 327.78 is: 451.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.18 : 587.52 = 327.78 : x
  2. Step 2: Convert to fraction form
    426.18/587.52 = 327.78/x
  3. Step 3: Cross multiply
    426.18x = 587.52 × 327.78
  4. Step 4: Simplify right side
    426.18x = 192,577.31
  5. Step 5: Solve for x
    x = 192,577.31/426.18
  6. Step 6: Final answer
    x = 451.87

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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.