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Finding the Fourth Proportional to 267.20, 368.32 and 163.52

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Solution

The fourth proportional to 267.20, 368.32 and 163.52 is: 225.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.20 : 368.32 = 163.52 : x
  2. Step 2: Convert to fraction form
    267.20/368.32 = 163.52/x
  3. Step 3: Cross multiply
    267.20x = 368.32 × 163.52
  4. Step 4: Simplify right side
    267.20x = 60,227.69
  5. Step 5: Solve for x
    x = 60,227.69/267.20
  6. Step 6: Final answer
    x = 225.40

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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.