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Finding the Fourth Proportional to 268.12, 402.12 and 94.75

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Solution

The fourth proportional to 268.12, 402.12 and 94.75 is: 142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.12 : 402.12 = 94.75 : x
  2. Step 2: Convert to fraction form
    268.12/402.12 = 94.75/x
  3. Step 3: Cross multiply
    268.12x = 402.12 × 94.75
  4. Step 4: Simplify right side
    268.12x = 38,099.86
  5. Step 5: Solve for x
    x = 38,099.86/268.12
  6. Step 6: Final answer
    x = 142.10

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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.