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Finding the Fourth Proportional to 109.08, 163.60 and 44.11

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Solution

The fourth proportional to 109.08, 163.60 and 44.11 is: 66.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.08 : 163.60 = 44.11 : x
  2. Step 2: Convert to fraction form
    109.08/163.60 = 44.11/x
  3. Step 3: Cross multiply
    109.08x = 163.60 × 44.11
  4. Step 4: Simplify right side
    109.08x = 7,216.40
  5. Step 5: Solve for x
    x = 7,216.40/109.08
  6. Step 6: Final answer
    x = 66.16

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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.