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Finding the Fourth Proportional to 174.79, 239.51 and 168.41

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Solution

The fourth proportional to 174.79, 239.51 and 168.41 is: 230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.79 : 239.51 = 168.41 : x
  2. Step 2: Convert to fraction form
    174.79/239.51 = 168.41/x
  3. Step 3: Cross multiply
    174.79x = 239.51 × 168.41
  4. Step 4: Simplify right side
    174.79x = 40,336.90
  5. Step 5: Solve for x
    x = 40,336.90/174.79
  6. Step 6: Final answer
    x = 230.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.