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Finding the Fourth Proportional to 217.68, 326.55 and 95.94

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Solution

The fourth proportional to 217.68, 326.55 and 95.94 is: 143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.68 : 326.55 = 95.94 : x
  2. Step 2: Convert to fraction form
    217.68/326.55 = 95.94/x
  3. Step 3: Cross multiply
    217.68x = 326.55 × 95.94
  4. Step 4: Simplify right side
    217.68x = 31,329.21
  5. Step 5: Solve for x
    x = 31,329.21/217.68
  6. Step 6: Final answer
    x = 143.92

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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.