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Finding the Fourth Proportional to 164.62, 227.17 and 90.94

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Solution

The fourth proportional to 164.62, 227.17 and 90.94 is: 125.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.62 : 227.17 = 90.94 : x
  2. Step 2: Convert to fraction form
    164.62/227.17 = 90.94/x
  3. Step 3: Cross multiply
    164.62x = 227.17 × 90.94
  4. Step 4: Simplify right side
    164.62x = 20,658.84
  5. Step 5: Solve for x
    x = 20,658.84/164.62
  6. Step 6: Final answer
    x = 125.49

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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.