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Finding the Fourth Proportional to 105.87, 146.03 and 64.44

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Solution

The fourth proportional to 105.87, 146.03 and 64.44 is: 88.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.87 : 146.03 = 64.44 : x
  2. Step 2: Convert to fraction form
    105.87/146.03 = 64.44/x
  3. Step 3: Cross multiply
    105.87x = 146.03 × 64.44
  4. Step 4: Simplify right side
    105.87x = 9,410.17
  5. Step 5: Solve for x
    x = 9,410.17/105.87
  6. Step 6: Final answer
    x = 88.88

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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.