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Finding the Fourth Proportional to 366.90, 549.84 and 220.46

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Solution

The fourth proportional to 366.90, 549.84 and 220.46 is: 330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.90 : 549.84 = 220.46 : x
  2. Step 2: Convert to fraction form
    366.90/549.84 = 220.46/x
  3. Step 3: Cross multiply
    366.90x = 549.84 × 220.46
  4. Step 4: Simplify right side
    366.90x = 121,217.73
  5. Step 5: Solve for x
    x = 121,217.73/366.90
  6. Step 6: Final answer
    x = 330.38

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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.