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Finding the Fourth Proportional to 545.87, 818.91 and 180.65

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Solution

The fourth proportional to 545.87, 818.91 and 180.65 is: 271.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.87 : 818.91 = 180.65 : x
  2. Step 2: Convert to fraction form
    545.87/818.91 = 180.65/x
  3. Step 3: Cross multiply
    545.87x = 818.91 × 180.65
  4. Step 4: Simplify right side
    545.87x = 147,938.14
  5. Step 5: Solve for x
    x = 147,938.14/545.87
  6. Step 6: Final answer
    x = 271.01

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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.