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Finding the Fourth Proportional to 179.74, 247.93 and 124.48

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Solution

The fourth proportional to 179.74, 247.93 and 124.48 is: 171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.74 : 247.93 = 124.48 : x
  2. Step 2: Convert to fraction form
    179.74/247.93 = 124.48/x
  3. Step 3: Cross multiply
    179.74x = 247.93 × 124.48
  4. Step 4: Simplify right side
    179.74x = 30,862.33
  5. Step 5: Solve for x
    x = 30,862.33/179.74
  6. Step 6: Final answer
    x = 171.71

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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.