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Finding the Fourth Proportional to 545.83, 818.51 and 220.97

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Solution

The fourth proportional to 545.83, 818.51 and 220.97 is: 331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.83 : 818.51 = 220.97 : x
  2. Step 2: Convert to fraction form
    545.83/818.51 = 220.97/x
  3. Step 3: Cross multiply
    545.83x = 818.51 × 220.97
  4. Step 4: Simplify right side
    545.83x = 180,868.75
  5. Step 5: Solve for x
    x = 180,868.75/545.83
  6. Step 6: Final answer
    x = 331.37

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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.