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Finding the Fourth Proportional to 819.03, 1,227.60 and 510.96

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Solution

The fourth proportional to 819.03, 1,227.60 and 510.96 is: 765.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    819.03 : 1,227.60 = 510.96 : x
  2. Step 2: Convert to fraction form
    819.03/1,227.60 = 510.96/x
  3. Step 3: Cross multiply
    819.03x = 1,227.60 × 510.96
  4. Step 4: Simplify right side
    819.03x = 627,254.50
  5. Step 5: Solve for x
    x = 627,254.50/819.03
  6. Step 6: Final answer
    x = 765.85

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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.