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Finding the Fourth Proportional to 367.18, 550.63 and 147.69

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Solution

The fourth proportional to 367.18, 550.63 and 147.69 is: 221.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.18 : 550.63 = 147.69 : x
  2. Step 2: Convert to fraction form
    367.18/550.63 = 147.69/x
  3. Step 3: Cross multiply
    367.18x = 550.63 × 147.69
  4. Step 4: Simplify right side
    367.18x = 81,322.54
  5. Step 5: Solve for x
    x = 81,322.54/367.18
  6. Step 6: Final answer
    x = 221.48

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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.