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Finding the Fourth Proportional to 179.05, 246.78 and 153.97

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Solution

The fourth proportional to 179.05, 246.78 and 153.97 is: 212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.05 : 246.78 = 153.97 : x
  2. Step 2: Convert to fraction form
    179.05/246.78 = 153.97/x
  3. Step 3: Cross multiply
    179.05x = 246.78 × 153.97
  4. Step 4: Simplify right side
    179.05x = 37,996.72
  5. Step 5: Solve for x
    x = 37,996.72/179.05
  6. Step 6: Final answer
    x = 212.21

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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.