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Finding the Fourth Proportional to 174.96, 239.96 and 155.52

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Solution

The fourth proportional to 174.96, 239.96 and 155.52 is: 213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.96 : 239.96 = 155.52 : x
  2. Step 2: Convert to fraction form
    174.96/239.96 = 155.52/x
  3. Step 3: Cross multiply
    174.96x = 239.96 × 155.52
  4. Step 4: Simplify right side
    174.96x = 37,318.58
  5. Step 5: Solve for x
    x = 37,318.58/174.96
  6. Step 6: Final answer
    x = 213.30

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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.