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Finding the Fourth Proportional to 231.98, 319.92 and 182.21

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Solution

The fourth proportional to 231.98, 319.92 and 182.21 is: 251.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.98 : 319.92 = 182.21 : x
  2. Step 2: Convert to fraction form
    231.98/319.92 = 182.21/x
  3. Step 3: Cross multiply
    231.98x = 319.92 × 182.21
  4. Step 4: Simplify right side
    231.98x = 58,291.02
  5. Step 5: Solve for x
    x = 58,291.02/231.98
  6. Step 6: Final answer
    x = 251.28

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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.