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Finding the Fourth Proportional to 511.57, 766.83 and 251.41

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Solution

The fourth proportional to 511.57, 766.83 and 251.41 is: 376.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.57 : 766.83 = 251.41 : x
  2. Step 2: Convert to fraction form
    511.57/766.83 = 251.41/x
  3. Step 3: Cross multiply
    511.57x = 766.83 × 251.41
  4. Step 4: Simplify right side
    511.57x = 192,788.73
  5. Step 5: Solve for x
    x = 192,788.73/511.57
  6. Step 6: Final answer
    x = 376.86

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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.