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Finding the Fourth Proportional to 180.22, 270.36 and 72.04

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Solution

The fourth proportional to 180.22, 270.36 and 72.04 is: 108.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.22 : 270.36 = 72.04 : x
  2. Step 2: Convert to fraction form
    180.22/270.36 = 72.04/x
  3. Step 3: Cross multiply
    180.22x = 270.36 × 72.04
  4. Step 4: Simplify right side
    180.22x = 19,476.73
  5. Step 5: Solve for x
    x = 19,476.73/180.22
  6. Step 6: Final answer
    x = 108.07

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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.