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Finding the Fourth Proportional to 27, 37.26 and 18.82

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Solution

The fourth proportional to 27, 37.26 and 18.82 is: 25.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27 : 37.26 = 18.82 : x
  2. Step 2: Convert to fraction form
    27/37.26 = 18.82/x
  3. Step 3: Cross multiply
    27x = 37.26 × 18.82
  4. Step 4: Simplify right side
    27x = 701.23
  5. Step 5: Solve for x
    x = 701.23/27
  6. Step 6: Final answer
    x = 25.97

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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.