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Finding the Fourth Proportional to 545.87, 819.30 and 272.54

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Solution

The fourth proportional to 545.87, 819.30 and 272.54 is: 409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.87 : 819.30 = 272.54 : x
  2. Step 2: Convert to fraction form
    545.87/819.30 = 272.54/x
  3. Step 3: Cross multiply
    545.87x = 819.30 × 272.54
  4. Step 4: Simplify right side
    545.87x = 223,292.02
  5. Step 5: Solve for x
    x = 223,292.02/545.87
  6. Step 6: Final answer
    x = 409.06

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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.