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Finding the Fourth Proportional to 23.23, 34.75 and 12.55

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Solution

The fourth proportional to 23.23, 34.75 and 12.55 is: 18.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.23 : 34.75 = 12.55 : x
  2. Step 2: Convert to fraction form
    23.23/34.75 = 12.55/x
  3. Step 3: Cross multiply
    23.23x = 34.75 × 12.55
  4. Step 4: Simplify right side
    23.23x = 435.91
  5. Step 5: Solve for x
    x = 435.91/23.23
  6. Step 6: Final answer
    x = 18.77

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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.