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Finding the Fourth Proportional to 165, 247.48 and 73.62

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Solution

The fourth proportional to 165, 247.48 and 73.62 is: 110.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    165 : 247.48 = 73.62 : x
  2. Step 2: Convert to fraction form
    165/247.48 = 73.62/x
  3. Step 3: Cross multiply
    165x = 247.48 × 73.62
  4. Step 4: Simplify right side
    165x = 18,219.48
  5. Step 5: Solve for x
    x = 18,219.48/165
  6. Step 6: Final answer
    x = 110.42

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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.