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Finding the Fourth Proportional to 29.44, 43.91 and 28.90

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Solution

The fourth proportional to 29.44, 43.91 and 28.90 is: 43.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.44 : 43.91 = 28.90 : x
  2. Step 2: Convert to fraction form
    29.44/43.91 = 28.90/x
  3. Step 3: Cross multiply
    29.44x = 43.91 × 28.90
  4. Step 4: Simplify right side
    29.44x = 1,269.00
  5. Step 5: Solve for x
    x = 1,269.00/29.44
  6. Step 6: Final answer
    x = 43.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.