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Finding the Fourth Proportional to 366.63, 550.15 and 220.43

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Solution

The fourth proportional to 366.63, 550.15 and 220.43 is: 330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.63 : 550.15 = 220.43 : x
  2. Step 2: Convert to fraction form
    366.63/550.15 = 220.43/x
  3. Step 3: Cross multiply
    366.63x = 550.15 × 220.43
  4. Step 4: Simplify right side
    366.63x = 121,266.26
  5. Step 5: Solve for x
    x = 121,266.26/366.63
  6. Step 6: Final answer
    x = 330.76

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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.