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Finding the Fourth Proportional to 74.44, 111.40 and 61.48

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Solution

The fourth proportional to 74.44, 111.40 and 61.48 is: 92.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.44 : 111.40 = 61.48 : x
  2. Step 2: Convert to fraction form
    74.44/111.40 = 61.48/x
  3. Step 3: Cross multiply
    74.44x = 111.40 × 61.48
  4. Step 4: Simplify right side
    74.44x = 6,848.87
  5. Step 5: Solve for x
    x = 6,848.87/74.44
  6. Step 6: Final answer
    x = 92.01

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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.