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Finding the Fourth Proportional to 174.12, 239.62 and 149.48

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Solution

The fourth proportional to 174.12, 239.62 and 149.48 is: 205.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.12 : 239.62 = 149.48 : x
  2. Step 2: Convert to fraction form
    174.12/239.62 = 149.48/x
  3. Step 3: Cross multiply
    174.12x = 239.62 × 149.48
  4. Step 4: Simplify right side
    174.12x = 35,818.40
  5. Step 5: Solve for x
    x = 35,818.40/174.12
  6. Step 6: Final answer
    x = 205.71

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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.