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Finding the Fourth Proportional to 1,469.89, 2,205.06 and 545.37

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Solution

The fourth proportional to 1,469.89, 2,205.06 and 545.37 is: 818.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.89 : 2,205.06 = 545.37 : x
  2. Step 2: Convert to fraction form
    1,469.89/2,205.06 = 545.37/x
  3. Step 3: Cross multiply
    1,469.89x = 2,205.06 × 545.37
  4. Step 4: Simplify right side
    1,469.89x = 1,202,573.57
  5. Step 5: Solve for x
    x = 1,202,573.57/1,469.89
  6. Step 6: Final answer
    x = 818.14

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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.