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Finding the Fourth Proportional to 273.88, 377.76 and 211.61

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Solution

The fourth proportional to 273.88, 377.76 and 211.61 is: 291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.88 : 377.76 = 211.61 : x
  2. Step 2: Convert to fraction form
    273.88/377.76 = 211.61/x
  3. Step 3: Cross multiply
    273.88x = 377.76 × 211.61
  4. Step 4: Simplify right side
    273.88x = 79,934.85
  5. Step 5: Solve for x
    x = 79,934.85/273.88
  6. Step 6: Final answer
    x = 291.87

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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.