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Finding the Fourth Proportional to 217.99, 325.39 and 201.92

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Solution

The fourth proportional to 217.99, 325.39 and 201.92 is: 301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.99 : 325.39 = 201.92 : x
  2. Step 2: Convert to fraction form
    217.99/325.39 = 201.92/x
  3. Step 3: Cross multiply
    217.99x = 325.39 × 201.92
  4. Step 4: Simplify right side
    217.99x = 65,703.97
  5. Step 5: Solve for x
    x = 65,703.97/217.99
  6. Step 6: Final answer
    x = 301.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.