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Finding the Fourth Proportional to 273.38, 376.53 and 231.80

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Solution

The fourth proportional to 273.38, 376.53 and 231.80 is: 319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.38 : 376.53 = 231.80 : x
  2. Step 2: Convert to fraction form
    273.38/376.53 = 231.80/x
  3. Step 3: Cross multiply
    273.38x = 376.53 × 231.80
  4. Step 4: Simplify right side
    273.38x = 87,279.65
  5. Step 5: Solve for x
    x = 87,279.65/273.38
  6. Step 6: Final answer
    x = 319.26

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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.