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Finding the Fourth Proportional to 119.51, 179.26 and 115.86

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Solution

The fourth proportional to 119.51, 179.26 and 115.86 is: 173.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.51 : 179.26 = 115.86 : x
  2. Step 2: Convert to fraction form
    119.51/179.26 = 115.86/x
  3. Step 3: Cross multiply
    119.51x = 179.26 × 115.86
  4. Step 4: Simplify right side
    119.51x = 20,769.06
  5. Step 5: Solve for x
    x = 20,769.06/119.51
  6. Step 6: Final answer
    x = 173.79

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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.