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Finding the Fourth Proportional to 70.54, 105.99 and 44.87

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Solution

The fourth proportional to 70.54, 105.99 and 44.87 is: 67.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.54 : 105.99 = 44.87 : x
  2. Step 2: Convert to fraction form
    70.54/105.99 = 44.87/x
  3. Step 3: Cross multiply
    70.54x = 105.99 × 44.87
  4. Step 4: Simplify right side
    70.54x = 4,755.92
  5. Step 5: Solve for x
    x = 4,755.92/70.54
  6. Step 6: Final answer
    x = 67.42

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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.