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Finding the Fourth Proportional to 545.44, 818.16 and 134.58

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Solution

The fourth proportional to 545.44, 818.16 and 134.58 is: 201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.44 : 818.16 = 134.58 : x
  2. Step 2: Convert to fraction form
    545.44/818.16 = 134.58/x
  3. Step 3: Cross multiply
    545.44x = 818.16 × 134.58
  4. Step 4: Simplify right side
    545.44x = 110,107.97
  5. Step 5: Solve for x
    x = 110,107.97/545.44
  6. Step 6: Final answer
    x = 201.87

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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.