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Finding the Fourth Proportional to 74.44, 111.82 and 47.41

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Solution

The fourth proportional to 74.44, 111.82 and 47.41 is: 71.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.44 : 111.82 = 47.41 : x
  2. Step 2: Convert to fraction form
    74.44/111.82 = 47.41/x
  3. Step 3: Cross multiply
    74.44x = 111.82 × 47.41
  4. Step 4: Simplify right side
    74.44x = 5,301.39
  5. Step 5: Solve for x
    x = 5,301.39/74.44
  6. Step 6: Final answer
    x = 71.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.