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Finding the Fourth Proportional to 270.45, 405.89 and 108.24

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Solution

The fourth proportional to 270.45, 405.89 and 108.24 is: 162.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.45 : 405.89 = 108.24 : x
  2. Step 2: Convert to fraction form
    270.45/405.89 = 108.24/x
  3. Step 3: Cross multiply
    270.45x = 405.89 × 108.24
  4. Step 4: Simplify right side
    270.45x = 43,932.99
  5. Step 5: Solve for x
    x = 43,932.99/270.45
  6. Step 6: Final answer
    x = 162.44

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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.