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Finding the Fourth Proportional to 108.73, 162.22 and 103.58

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Solution

The fourth proportional to 108.73, 162.22 and 103.58 is: 154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.73 : 162.22 = 103.58 : x
  2. Step 2: Convert to fraction form
    108.73/162.22 = 103.58/x
  3. Step 3: Cross multiply
    108.73x = 162.22 × 103.58
  4. Step 4: Simplify right side
    108.73x = 16,802.75
  5. Step 5: Solve for x
    x = 16,802.75/108.73
  6. Step 6: Final answer
    x = 154.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.