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Finding the Fourth Proportional to 545.97, 818.96 and 220.98

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Solution

The fourth proportional to 545.97, 818.96 and 220.98 is: 331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.97 : 818.96 = 220.98 : x
  2. Step 2: Convert to fraction form
    545.97/818.96 = 220.98/x
  3. Step 3: Cross multiply
    545.97x = 818.96 × 220.98
  4. Step 4: Simplify right side
    545.97x = 180,972.68
  5. Step 5: Solve for x
    x = 180,972.68/545.97
  6. Step 6: Final answer
    x = 331.47

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Double scale
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Similar ratio
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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.