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Finding the Fourth Proportional to 273.69, 377.40 and 211.39

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Solution

The fourth proportional to 273.69, 377.40 and 211.39 is: 291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.69 : 377.40 = 211.39 : x
  2. Step 2: Convert to fraction form
    273.69/377.40 = 211.39/x
  3. Step 3: Cross multiply
    273.69x = 377.40 × 211.39
  4. Step 4: Simplify right side
    273.69x = 79,778.59
  5. Step 5: Solve for x
    x = 79,778.59/273.69
  6. Step 6: Final answer
    x = 291.49

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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.