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Finding the Fourth Proportional to 2,006.80, 3,009.96 and 545.61

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Solution

The fourth proportional to 2,006.80, 3,009.96 and 545.61 is: 818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.80 : 3,009.96 = 545.61 : x
  2. Step 2: Convert to fraction form
    2,006.80/3,009.96 = 545.61/x
  3. Step 3: Cross multiply
    2,006.80x = 3,009.96 × 545.61
  4. Step 4: Simplify right side
    2,006.80x = 1,642,264.28
  5. Step 5: Solve for x
    x = 1,642,264.28/2,006.80
  6. Step 6: Final answer
    x = 818.35

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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.