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Finding the Fourth Proportional to 164.72, 227.31 and 94.77

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Solution

The fourth proportional to 164.72, 227.31 and 94.77 is: 130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.72 : 227.31 = 94.77 : x
  2. Step 2: Convert to fraction form
    164.72/227.31 = 94.77/x
  3. Step 3: Cross multiply
    164.72x = 227.31 × 94.77
  4. Step 4: Simplify right side
    164.72x = 21,542.45
  5. Step 5: Solve for x
    x = 21,542.45/164.72
  6. Step 6: Final answer
    x = 130.78

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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.