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Finding the Fourth Proportional to 190.78, 262.83 and 132.46

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Solution

The fourth proportional to 190.78, 262.83 and 132.46 is: 182.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.78 : 262.83 = 132.46 : x
  2. Step 2: Convert to fraction form
    190.78/262.83 = 132.46/x
  3. Step 3: Cross multiply
    190.78x = 262.83 × 132.46
  4. Step 4: Simplify right side
    190.78x = 34,814.46
  5. Step 5: Solve for x
    x = 34,814.46/190.78
  6. Step 6: Final answer
    x = 182.48

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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.