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Finding the Fourth Proportional to 179.37, 269.09 and 76.60

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Solution

The fourth proportional to 179.37, 269.09 and 76.60 is: 114.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.37 : 269.09 = 76.60 : x
  2. Step 2: Convert to fraction form
    179.37/269.09 = 76.60/x
  3. Step 3: Cross multiply
    179.37x = 269.09 × 76.60
  4. Step 4: Simplify right side
    179.37x = 20,611.24
  5. Step 5: Solve for x
    x = 20,611.24/179.37
  6. Step 6: Final answer
    x = 114.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.