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Finding the Fourth Proportional to 74.41, 111.07 and 63.61

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Solution

The fourth proportional to 74.41, 111.07 and 63.61 is: 94.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.41 : 111.07 = 63.61 : x
  2. Step 2: Convert to fraction form
    74.41/111.07 = 63.61/x
  3. Step 3: Cross multiply
    74.41x = 111.07 × 63.61
  4. Step 4: Simplify right side
    74.41x = 7,065.32
  5. Step 5: Solve for x
    x = 7,065.32/74.41
  6. Step 6: Final answer
    x = 94.95

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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.