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Finding the Fourth Proportional to 272.73, 376.36 and 154.70

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Solution

The fourth proportional to 272.73, 376.36 and 154.70 is: 213.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.73 : 376.36 = 154.70 : x
  2. Step 2: Convert to fraction form
    272.73/376.36 = 154.70/x
  3. Step 3: Cross multiply
    272.73x = 376.36 × 154.70
  4. Step 4: Simplify right side
    272.73x = 58,221.01
  5. Step 5: Solve for x
    x = 58,221.01/272.73
  6. Step 6: Final answer
    x = 213.47

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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.