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Finding the Fourth Proportional to 164.66, 227.21 and 90.96

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Solution

The fourth proportional to 164.66, 227.21 and 90.96 is: 125.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.66 : 227.21 = 90.96 : x
  2. Step 2: Convert to fraction form
    164.66/227.21 = 90.96/x
  3. Step 3: Cross multiply
    164.66x = 227.21 × 90.96
  4. Step 4: Simplify right side
    164.66x = 20,667.02
  5. Step 5: Solve for x
    x = 20,667.02/164.66
  6. Step 6: Final answer
    x = 125.51

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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.