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Finding the Fourth Proportional to 23.61, 35.22 and 19.96

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Solution

The fourth proportional to 23.61, 35.22 and 19.96 is: 29.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.61 : 35.22 = 19.96 : x
  2. Step 2: Convert to fraction form
    23.61/35.22 = 19.96/x
  3. Step 3: Cross multiply
    23.61x = 35.22 × 19.96
  4. Step 4: Simplify right side
    23.61x = 702.99
  5. Step 5: Solve for x
    x = 702.99/23.61
  6. Step 6: Final answer
    x = 29.78

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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.