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Finding the Fourth Proportional to 108.83, 163.28 and 36.70

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Solution

The fourth proportional to 108.83, 163.28 and 36.70 is: 55.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.83 : 163.28 = 36.70 : x
  2. Step 2: Convert to fraction form
    108.83/163.28 = 36.70/x
  3. Step 3: Cross multiply
    108.83x = 163.28 × 36.70
  4. Step 4: Simplify right side
    108.83x = 5,992.38
  5. Step 5: Solve for x
    x = 5,992.38/108.83
  6. Step 6: Final answer
    x = 55.06

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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.