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Finding the Fourth Proportional to 108.97, 163.34 and 48.13

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Solution

The fourth proportional to 108.97, 163.34 and 48.13 is: 72.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.97 : 163.34 = 48.13 : x
  2. Step 2: Convert to fraction form
    108.97/163.34 = 48.13/x
  3. Step 3: Cross multiply
    108.97x = 163.34 × 48.13
  4. Step 4: Simplify right side
    108.97x = 7,860.50
  5. Step 5: Solve for x
    x = 7,860.50/108.97
  6. Step 6: Final answer
    x = 72.14

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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.