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Finding the Fourth Proportional to 164.73, 227.43 and 115.74

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Solution

The fourth proportional to 164.73, 227.43 and 115.74 is: 159.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.73 : 227.43 = 115.74 : x
  2. Step 2: Convert to fraction form
    164.73/227.43 = 115.74/x
  3. Step 3: Cross multiply
    164.73x = 227.43 × 115.74
  4. Step 4: Simplify right side
    164.73x = 26,322.75
  5. Step 5: Solve for x
    x = 26,322.75/164.73
  6. Step 6: Final answer
    x = 159.79

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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.