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Finding the Fourth Proportional to 96.58, 132.96 and 86.23

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Solution

The fourth proportional to 96.58, 132.96 and 86.23 is: 118.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.58 : 132.96 = 86.23 : x
  2. Step 2: Convert to fraction form
    96.58/132.96 = 86.23/x
  3. Step 3: Cross multiply
    96.58x = 132.96 × 86.23
  4. Step 4: Simplify right side
    96.58x = 11,465.14
  5. Step 5: Solve for x
    x = 11,465.14/96.58
  6. Step 6: Final answer
    x = 118.71

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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.