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Finding the Fourth Proportional to 231.96, 319.92 and 190.50

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Solution

The fourth proportional to 231.96, 319.92 and 190.50 is: 262.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.96 : 319.92 = 190.50 : x
  2. Step 2: Convert to fraction form
    231.96/319.92 = 190.50/x
  3. Step 3: Cross multiply
    231.96x = 319.92 × 190.50
  4. Step 4: Simplify right side
    231.96x = 60,944.76
  5. Step 5: Solve for x
    x = 60,944.76/231.96
  6. Step 6: Final answer
    x = 262.74

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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.