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Finding the Fourth Proportional to 545.85, 818.57 and 199.08

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Solution

The fourth proportional to 545.85, 818.57 and 199.08 is: 298.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.85 : 818.57 = 199.08 : x
  2. Step 2: Convert to fraction form
    545.85/818.57 = 199.08/x
  3. Step 3: Cross multiply
    545.85x = 818.57 × 199.08
  4. Step 4: Simplify right side
    545.85x = 162,959.92
  5. Step 5: Solve for x
    x = 162,959.92/545.85
  6. Step 6: Final answer
    x = 298.54

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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.