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Finding the Fourth Proportional to 23.21, 32.02 and 15.44

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Solution

The fourth proportional to 23.21, 32.02 and 15.44 is: 21.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.21 : 32.02 = 15.44 : x
  2. Step 2: Convert to fraction form
    23.21/32.02 = 15.44/x
  3. Step 3: Cross multiply
    23.21x = 32.02 × 15.44
  4. Step 4: Simplify right side
    23.21x = 494.31
  5. Step 5: Solve for x
    x = 494.31/23.21
  6. Step 6: Final answer
    x = 21.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.