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Finding the Fourth Proportional to 511.47, 766.89 and 251.46

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Solution

The fourth proportional to 511.47, 766.89 and 251.46 is: 377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.47 : 766.89 = 251.46 : x
  2. Step 2: Convert to fraction form
    511.47/766.89 = 251.46/x
  3. Step 3: Cross multiply
    511.47x = 766.89 × 251.46
  4. Step 4: Simplify right side
    511.47x = 192,842.16
  5. Step 5: Solve for x
    x = 192,842.16/511.47
  6. Step 6: Final answer
    x = 377.04

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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.