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Finding the Fourth Proportional to 29.26, 43.78 and 20.25

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Solution

The fourth proportional to 29.26, 43.78 and 20.25 is: 30.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.26 : 43.78 = 20.25 : x
  2. Step 2: Convert to fraction form
    29.26/43.78 = 20.25/x
  3. Step 3: Cross multiply
    29.26x = 43.78 × 20.25
  4. Step 4: Simplify right side
    29.26x = 886.55
  5. Step 5: Solve for x
    x = 886.55/29.26
  6. Step 6: Final answer
    x = 30.30

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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.