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Finding the Fourth Proportional to 190.90, 263.55 and 131.97

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Solution

The fourth proportional to 190.90, 263.55 and 131.97 is: 182.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.90 : 263.55 = 131.97 : x
  2. Step 2: Convert to fraction form
    190.90/263.55 = 131.97/x
  3. Step 3: Cross multiply
    190.90x = 263.55 × 131.97
  4. Step 4: Simplify right side
    190.90x = 34,780.69
  5. Step 5: Solve for x
    x = 34,780.69/190.90
  6. Step 6: Final answer
    x = 182.19

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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.