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Finding the Fourth Proportional to 164.91, 227.43 and 115.70

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Solution

The fourth proportional to 164.91, 227.43 and 115.70 is: 159.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.91 : 227.43 = 115.70 : x
  2. Step 2: Convert to fraction form
    164.91/227.43 = 115.70/x
  3. Step 3: Cross multiply
    164.91x = 227.43 × 115.70
  4. Step 4: Simplify right side
    164.91x = 26,313.65
  5. Step 5: Solve for x
    x = 26,313.65/164.91
  6. Step 6: Final answer
    x = 159.56

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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.