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Finding the Fourth Proportional to 108.75, 150.03 and 67.29

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Solution

The fourth proportional to 108.75, 150.03 and 67.29 is: 92.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.75 : 150.03 = 67.29 : x
  2. Step 2: Convert to fraction form
    108.75/150.03 = 67.29/x
  3. Step 3: Cross multiply
    108.75x = 150.03 × 67.29
  4. Step 4: Simplify right side
    108.75x = 10,095.52
  5. Step 5: Solve for x
    x = 10,095.52/108.75
  6. Step 6: Final answer
    x = 92.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.