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Finding the Fourth Proportional to 179.22, 268.78 and 57.46

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Solution

The fourth proportional to 179.22, 268.78 and 57.46 is: 86.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.22 : 268.78 = 57.46 : x
  2. Step 2: Convert to fraction form
    179.22/268.78 = 57.46/x
  3. Step 3: Cross multiply
    179.22x = 268.78 × 57.46
  4. Step 4: Simplify right side
    179.22x = 15,443.73
  5. Step 5: Solve for x
    x = 15,443.73/179.22
  6. Step 6: Final answer
    x = 86.17

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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.