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Finding the Fourth Proportional to 273.67, 377.42 and 211.30

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Solution

The fourth proportional to 273.67, 377.42 and 211.30 is: 291.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.67 : 377.42 = 211.30 : x
  2. Step 2: Convert to fraction form
    273.67/377.42 = 211.30/x
  3. Step 3: Cross multiply
    273.67x = 377.42 × 211.30
  4. Step 4: Simplify right side
    273.67x = 79,748.85
  5. Step 5: Solve for x
    x = 79,748.85/273.67
  6. Step 6: Final answer
    x = 291.41

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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.