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Finding the Fourth Proportional to 179.37, 247.19 and 121.05

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Solution

The fourth proportional to 179.37, 247.19 and 121.05 is: 166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.37 : 247.19 = 121.05 : x
  2. Step 2: Convert to fraction form
    179.37/247.19 = 121.05/x
  3. Step 3: Cross multiply
    179.37x = 247.19 × 121.05
  4. Step 4: Simplify right side
    179.37x = 29,921.74
  5. Step 5: Solve for x
    x = 29,921.74/179.37
  6. Step 6: Final answer
    x = 166.82

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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.