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Finding the Fourth Proportional to 179.91, 247.83 and 127.39

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Solution

The fourth proportional to 179.91, 247.83 and 127.39 is: 175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.91 : 247.83 = 127.39 : x
  2. Step 2: Convert to fraction form
    179.91/247.83 = 127.39/x
  3. Step 3: Cross multiply
    179.91x = 247.83 × 127.39
  4. Step 4: Simplify right side
    179.91x = 31,571.06
  5. Step 5: Solve for x
    x = 31,571.06/179.91
  6. Step 6: Final answer
    x = 175.48

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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.