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Finding the Fourth Proportional to 44.17, 66.21 and 28.96

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Solution

The fourth proportional to 44.17, 66.21 and 28.96 is: 43.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.17 : 66.21 = 28.96 : x
  2. Step 2: Convert to fraction form
    44.17/66.21 = 28.96/x
  3. Step 3: Cross multiply
    44.17x = 66.21 × 28.96
  4. Step 4: Simplify right side
    44.17x = 1,917.44
  5. Step 5: Solve for x
    x = 1,917.44/44.17
  6. Step 6: Final answer
    x = 43.41

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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.