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Finding the Fourth Proportional to 27.42, 40.82 and 27.27

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Solution

The fourth proportional to 27.42, 40.82 and 27.27 is: 40.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.42 : 40.82 = 27.27 : x
  2. Step 2: Convert to fraction form
    27.42/40.82 = 27.27/x
  3. Step 3: Cross multiply
    27.42x = 40.82 × 27.27
  4. Step 4: Simplify right side
    27.42x = 1,113.03
  5. Step 5: Solve for x
    x = 1,113.03/27.42
  6. Step 6: Final answer
    x = 40.59

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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.