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Finding the Fourth Proportional to 29.21, 43.77 and 13.97

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Solution

The fourth proportional to 29.21, 43.77 and 13.97 is: 20.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.21 : 43.77 = 13.97 : x
  2. Step 2: Convert to fraction form
    29.21/43.77 = 13.97/x
  3. Step 3: Cross multiply
    29.21x = 43.77 × 13.97
  4. Step 4: Simplify right side
    29.21x = 611.25
  5. Step 5: Solve for x
    x = 611.25/29.21
  6. Step 6: Final answer
    x = 20.93

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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.