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Finding the Fourth Proportional to 1,641.45, 2,462.19 and 819.52

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Solution

The fourth proportional to 1,641.45, 2,462.19 and 819.52 is: 1,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.45 : 2,462.19 = 819.52 : x
  2. Step 2: Convert to fraction form
    1,641.45/2,462.19 = 819.52/x
  3. Step 3: Cross multiply
    1,641.45x = 2,462.19 × 819.52
  4. Step 4: Simplify right side
    1,641.45x = 2,017,813.95
  5. Step 5: Solve for x
    x = 2,017,813.95/1,641.45
  6. Step 6: Final answer
    x = 1,229.29

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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.