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Finding the Fourth Proportional to 95.81, 132.18 and 83.53

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Solution

The fourth proportional to 95.81, 132.18 and 83.53 is: 115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.81 : 132.18 = 83.53 : x
  2. Step 2: Convert to fraction form
    95.81/132.18 = 83.53/x
  3. Step 3: Cross multiply
    95.81x = 132.18 × 83.53
  4. Step 4: Simplify right side
    95.81x = 11,040.33
  5. Step 5: Solve for x
    x = 11,040.33/95.81
  6. Step 6: Final answer
    x = 115.23

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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.