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Finding the Fourth Proportional to 165.61, 247.94 and 108.49

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Solution

The fourth proportional to 165.61, 247.94 and 108.49 is: 162.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.61 : 247.94 = 108.49 : x
  2. Step 2: Convert to fraction form
    165.61/247.94 = 108.49/x
  3. Step 3: Cross multiply
    165.61x = 247.94 × 108.49
  4. Step 4: Simplify right side
    165.61x = 26,898.47
  5. Step 5: Solve for x
    x = 26,898.47/165.61
  6. Step 6: Final answer
    x = 162.42

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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.