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Finding the Fourth Proportional to 245.46, 338.78 and 162.68

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Solution

The fourth proportional to 245.46, 338.78 and 162.68 is: 224.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.46 : 338.78 = 162.68 : x
  2. Step 2: Convert to fraction form
    245.46/338.78 = 162.68/x
  3. Step 3: Cross multiply
    245.46x = 338.78 × 162.68
  4. Step 4: Simplify right side
    245.46x = 55,112.73
  5. Step 5: Solve for x
    x = 55,112.73/245.46
  6. Step 6: Final answer
    x = 224.53

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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.