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Finding the Fourth Proportional to 288.67, 398.38 and 164.37

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Solution

The fourth proportional to 288.67, 398.38 and 164.37 is: 226.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.67 : 398.38 = 164.37 : x
  2. Step 2: Convert to fraction form
    288.67/398.38 = 164.37/x
  3. Step 3: Cross multiply
    288.67x = 398.38 × 164.37
  4. Step 4: Simplify right side
    288.67x = 65,481.72
  5. Step 5: Solve for x
    x = 65,481.72/288.67
  6. Step 6: Final answer
    x = 226.84

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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.