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Finding the Fourth Proportional to 268.92, 403.41 and 178.08

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Solution

The fourth proportional to 268.92, 403.41 and 178.08 is: 267.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.92 : 403.41 = 178.08 : x
  2. Step 2: Convert to fraction form
    268.92/403.41 = 178.08/x
  3. Step 3: Cross multiply
    268.92x = 403.41 × 178.08
  4. Step 4: Simplify right side
    268.92x = 71,839.25
  5. Step 5: Solve for x
    x = 71,839.25/268.92
  6. Step 6: Final answer
    x = 267.14

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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.