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Finding the Fourth Proportional to 617.98, 927.05 and 545.54

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Solution

The fourth proportional to 617.98, 927.05 and 545.54 is: 818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.98 : 927.05 = 545.54 : x
  2. Step 2: Convert to fraction form
    617.98/927.05 = 545.54/x
  3. Step 3: Cross multiply
    617.98x = 927.05 × 545.54
  4. Step 4: Simplify right side
    617.98x = 505,735.49
  5. Step 5: Solve for x
    x = 505,735.49/617.98
  6. Step 6: Final answer
    x = 818.37

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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.