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Finding the Fourth Proportional to 165.96, 248.60 and 104.79

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Solution

The fourth proportional to 165.96, 248.60 and 104.79 is: 156.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.96 : 248.60 = 104.79 : x
  2. Step 2: Convert to fraction form
    165.96/248.60 = 104.79/x
  3. Step 3: Cross multiply
    165.96x = 248.60 × 104.79
  4. Step 4: Simplify right side
    165.96x = 26,050.27
  5. Step 5: Solve for x
    x = 26,050.27/165.96
  6. Step 6: Final answer
    x = 156.97

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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.