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Finding the Fourth Proportional to 270.66, 406.09 and 108.26

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Solution

The fourth proportional to 270.66, 406.09 and 108.26 is: 162.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.66 : 406.09 = 108.26 : x
  2. Step 2: Convert to fraction form
    270.66/406.09 = 108.26/x
  3. Step 3: Cross multiply
    270.66x = 406.09 × 108.26
  4. Step 4: Simplify right side
    270.66x = 43,961.27
  5. Step 5: Solve for x
    x = 43,961.27/270.66
  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.