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Finding the Fourth Proportional to 179.39, 247.38 and 154.82

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Solution

The fourth proportional to 179.39, 247.38 and 154.82 is: 213.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.39 : 247.38 = 154.82 : x
  2. Step 2: Convert to fraction form
    179.39/247.38 = 154.82/x
  3. Step 3: Cross multiply
    179.39x = 247.38 × 154.82
  4. Step 4: Simplify right side
    179.39x = 38,299.37
  5. Step 5: Solve for x
    x = 38,299.37/179.39
  6. Step 6: Final answer
    x = 213.50

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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.