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Finding the Fourth Proportional to 37.29, 51.42 and 22.71

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Solution

The fourth proportional to 37.29, 51.42 and 22.71 is: 31.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.29 : 51.42 = 22.71 : x
  2. Step 2: Convert to fraction form
    37.29/51.42 = 22.71/x
  3. Step 3: Cross multiply
    37.29x = 51.42 × 22.71
  4. Step 4: Simplify right side
    37.29x = 1,167.75
  5. Step 5: Solve for x
    x = 1,167.75/37.29
  6. Step 6: Final answer
    x = 31.32

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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.