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Finding the Fourth Proportional to 171.11, 255.62 and 119.32

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Solution

The fourth proportional to 171.11, 255.62 and 119.32 is: 178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.11 : 255.62 = 119.32 : x
  2. Step 2: Convert to fraction form
    171.11/255.62 = 119.32/x
  3. Step 3: Cross multiply
    171.11x = 255.62 × 119.32
  4. Step 4: Simplify right side
    171.11x = 30,500.24
  5. Step 5: Solve for x
    x = 30,500.24/171.11
  6. Step 6: Final answer
    x = 178.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.