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Finding the Fourth Proportional to 272.77, 376.85 and 217.89

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Solution

The fourth proportional to 272.77, 376.85 and 217.89 is: 301.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.77 : 376.85 = 217.89 : x
  2. Step 2: Convert to fraction form
    272.77/376.85 = 217.89/x
  3. Step 3: Cross multiply
    272.77x = 376.85 × 217.89
  4. Step 4: Simplify right side
    272.77x = 82,112.39
  5. Step 5: Solve for x
    x = 82,112.39/272.77
  6. Step 6: Final answer
    x = 301.03

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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.