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Finding the Fourth Proportional to 108.55, 163.44 and 95.79

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Solution

The fourth proportional to 108.55, 163.44 and 95.79 is: 144.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.55 : 163.44 = 95.79 : x
  2. Step 2: Convert to fraction form
    108.55/163.44 = 95.79/x
  3. Step 3: Cross multiply
    108.55x = 163.44 × 95.79
  4. Step 4: Simplify right side
    108.55x = 15,655.92
  5. Step 5: Solve for x
    x = 15,655.92/108.55
  6. Step 6: Final answer
    x = 144.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.