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Finding the Fourth Proportional to 367.24, 550.20 and 258.64

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Solution

The fourth proportional to 367.24, 550.20 and 258.64 is: 387.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.24 : 550.20 = 258.64 : x
  2. Step 2: Convert to fraction form
    367.24/550.20 = 258.64/x
  3. Step 3: Cross multiply
    367.24x = 550.20 × 258.64
  4. Step 4: Simplify right side
    367.24x = 142,303.73
  5. Step 5: Solve for x
    x = 142,303.73/367.24
  6. Step 6: Final answer
    x = 387.50

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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.