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Finding the Fourth Proportional to 44.22, 66.33 and 20.15

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Solution

The fourth proportional to 44.22, 66.33 and 20.15 is: 30.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.22 : 66.33 = 20.15 : x
  2. Step 2: Convert to fraction form
    44.22/66.33 = 20.15/x
  3. Step 3: Cross multiply
    44.22x = 66.33 × 20.15
  4. Step 4: Simplify right side
    44.22x = 1,336.22
  5. Step 5: Solve for x
    x = 1,336.22/44.22
  6. Step 6: Final answer
    x = 30.22

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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.