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Finding the Fourth Proportional to 132.30, 183.06 and 115.09

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Solution

The fourth proportional to 132.30, 183.06 and 115.09 is: 159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.30 : 183.06 = 115.09 : x
  2. Step 2: Convert to fraction form
    132.30/183.06 = 115.09/x
  3. Step 3: Cross multiply
    132.30x = 183.06 × 115.09
  4. Step 4: Simplify right side
    132.30x = 21,067.92
  5. Step 5: Solve for x
    x = 21,067.92/132.30
  6. Step 6: Final answer
    x = 159.24

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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.