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Finding the Fourth Proportional to 163.79, 226.01 and 93.85

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Solution

The fourth proportional to 163.79, 226.01 and 93.85 is: 129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.79 : 226.01 = 93.85 : x
  2. Step 2: Convert to fraction form
    163.79/226.01 = 93.85/x
  3. Step 3: Cross multiply
    163.79x = 226.01 × 93.85
  4. Step 4: Simplify right side
    163.79x = 21,210.71
  5. Step 5: Solve for x
    x = 21,210.71/163.79
  6. Step 6: Final answer
    x = 129.50

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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.