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Finding the Fourth Proportional to 545.61, 818.53 and 180.38

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Solution

The fourth proportional to 545.61, 818.53 and 180.38 is: 270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.61 : 818.53 = 180.38 : x
  2. Step 2: Convert to fraction form
    545.61/818.53 = 180.38/x
  3. Step 3: Cross multiply
    545.61x = 818.53 × 180.38
  4. Step 4: Simplify right side
    545.61x = 147,646.44
  5. Step 5: Solve for x
    x = 147,646.44/545.61
  6. Step 6: Final answer
    x = 270.61

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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.