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Finding the Fourth Proportional to 26.63, 36.71 and 18.44

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Solution

The fourth proportional to 26.63, 36.71 and 18.44 is: 25.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.63 : 36.71 = 18.44 : x
  2. Step 2: Convert to fraction form
    26.63/36.71 = 18.44/x
  3. Step 3: Cross multiply
    26.63x = 36.71 × 18.44
  4. Step 4: Simplify right side
    26.63x = 676.75
  5. Step 5: Solve for x
    x = 676.75/26.63
  6. Step 6: Final answer
    x = 25.42

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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.