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Finding the Fourth Proportional to 217.61, 300.42 and 168.60

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Solution

The fourth proportional to 217.61, 300.42 and 168.60 is: 232.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.61 : 300.42 = 168.60 : x
  2. Step 2: Convert to fraction form
    217.61/300.42 = 168.60/x
  3. Step 3: Cross multiply
    217.61x = 300.42 × 168.60
  4. Step 4: Simplify right side
    217.61x = 50,650.81
  5. Step 5: Solve for x
    x = 50,650.81/217.61
  6. Step 6: Final answer
    x = 232.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.