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Finding the Fourth Proportional to 274.03, 377.89 and 211.71

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Solution

The fourth proportional to 274.03, 377.89 and 211.71 is: 291.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.03 : 377.89 = 211.71 : x
  2. Step 2: Convert to fraction form
    274.03/377.89 = 211.71/x
  3. Step 3: Cross multiply
    274.03x = 377.89 × 211.71
  4. Step 4: Simplify right side
    274.03x = 80,003.09
  5. Step 5: Solve for x
    x = 80,003.09/274.03
  6. Step 6: Final answer
    x = 291.95

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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.