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Finding the Fourth Proportional to 511.28, 765.71 and 250.46

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Solution

The fourth proportional to 511.28, 765.71 and 250.46 is: 375.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.28 : 765.71 = 250.46 : x
  2. Step 2: Convert to fraction form
    511.28/765.71 = 250.46/x
  3. Step 3: Cross multiply
    511.28x = 765.71 × 250.46
  4. Step 4: Simplify right side
    511.28x = 191,775.90
  5. Step 5: Solve for x
    x = 191,775.90/511.28
  6. Step 6: Final answer
    x = 375.09

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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.