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Finding the Fourth Proportional to 363.85, 545.23 and 201.31

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Solution

The fourth proportional to 363.85, 545.23 and 201.31 is: 301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.85 : 545.23 = 201.31 : x
  2. Step 2: Convert to fraction form
    363.85/545.23 = 201.31/x
  3. Step 3: Cross multiply
    363.85x = 545.23 × 201.31
  4. Step 4: Simplify right side
    363.85x = 109,760.25
  5. Step 5: Solve for x
    x = 109,760.25/363.85
  6. Step 6: Final answer
    x = 301.66

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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.