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Finding the Fourth Proportional to 44.21, 66.22 and 28.99

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Solution

The fourth proportional to 44.21, 66.22 and 28.99 is: 43.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.21 : 66.22 = 28.99 : x
  2. Step 2: Convert to fraction form
    44.21/66.22 = 28.99/x
  3. Step 3: Cross multiply
    44.21x = 66.22 × 28.99
  4. Step 4: Simplify right side
    44.21x = 1,919.73
  5. Step 5: Solve for x
    x = 1,919.73/44.21
  6. Step 6: Final answer
    x = 43.42

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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.