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Finding the Fourth Proportional to 163.35, 225.41 and 93.43

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Solution

The fourth proportional to 163.35, 225.41 and 93.43 is: 128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.35 : 225.41 = 93.43 : x
  2. Step 2: Convert to fraction form
    163.35/225.41 = 93.43/x
  3. Step 3: Cross multiply
    163.35x = 225.41 × 93.43
  4. Step 4: Simplify right side
    163.35x = 21,059.03
  5. Step 5: Solve for x
    x = 21,059.03/163.35
  6. Step 6: Final answer
    x = 128.92

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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.