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Finding the Fourth Proportional to 37.92, 56.67 and 27.72

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Solution

The fourth proportional to 37.92, 56.67 and 27.72 is: 41.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.92 : 56.67 = 27.72 : x
  2. Step 2: Convert to fraction form
    37.92/56.67 = 27.72/x
  3. Step 3: Cross multiply
    37.92x = 56.67 × 27.72
  4. Step 4: Simplify right side
    37.92x = 1,570.89
  5. Step 5: Solve for x
    x = 1,570.89/37.92
  6. Step 6: Final answer
    x = 41.43

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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.