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Finding the Fourth Proportional to 273.61, 377.73 and 189.71

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Solution

The fourth proportional to 273.61, 377.73 and 189.71 is: 261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.61 : 377.73 = 189.71 : x
  2. Step 2: Convert to fraction form
    273.61/377.73 = 189.71/x
  3. Step 3: Cross multiply
    273.61x = 377.73 × 189.71
  4. Step 4: Simplify right side
    273.61x = 71,657.27
  5. Step 5: Solve for x
    x = 71,657.27/273.61
  6. Step 6: Final answer
    x = 261.90

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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.