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Finding the Fourth Proportional to 164.52, 226.76 and 115.31

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Solution

The fourth proportional to 164.52, 226.76 and 115.31 is: 158.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.52 : 226.76 = 115.31 : x
  2. Step 2: Convert to fraction form
    164.52/226.76 = 115.31/x
  3. Step 3: Cross multiply
    164.52x = 226.76 × 115.31
  4. Step 4: Simplify right side
    164.52x = 26,147.70
  5. Step 5: Solve for x
    x = 26,147.70/164.52
  6. Step 6: Final answer
    x = 158.93

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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.