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Finding the Fourth Proportional to 272.72, 376.40 and 179.61

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Solution

The fourth proportional to 272.72, 376.40 and 179.61 is: 247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.72 : 376.40 = 179.61 : x
  2. Step 2: Convert to fraction form
    272.72/376.40 = 179.61/x
  3. Step 3: Cross multiply
    272.72x = 376.40 × 179.61
  4. Step 4: Simplify right side
    272.72x = 67,605.65
  5. Step 5: Solve for x
    x = 67,605.65/272.72
  6. Step 6: Final answer
    x = 247.90

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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.