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Finding the Fourth Proportional to 165.73, 248.36 and 122.05

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Solution

The fourth proportional to 165.73, 248.36 and 122.05 is: 182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.73 : 248.36 = 122.05 : x
  2. Step 2: Convert to fraction form
    165.73/248.36 = 122.05/x
  3. Step 3: Cross multiply
    165.73x = 248.36 × 122.05
  4. Step 4: Simplify right side
    165.73x = 30,312.97
  5. Step 5: Solve for x
    x = 30,312.97/165.73
  6. Step 6: Final answer
    x = 182.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.