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Finding the Fourth Proportional to 165.89, 248.83 and 68.33

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Solution

The fourth proportional to 165.89, 248.83 and 68.33 is: 102.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.89 : 248.83 = 68.33 : x
  2. Step 2: Convert to fraction form
    165.89/248.83 = 68.33/x
  3. Step 3: Cross multiply
    165.89x = 248.83 × 68.33
  4. Step 4: Simplify right side
    165.89x = 17,003.49
  5. Step 5: Solve for x
    x = 17,003.49/165.89
  6. Step 6: Final answer
    x = 102.50

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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.