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Finding the Fourth Proportional to 164.28, 226.79 and 115.35

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Solution

The fourth proportional to 164.28, 226.79 and 115.35 is: 159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.28 : 226.79 = 115.35 : x
  2. Step 2: Convert to fraction form
    164.28/226.79 = 115.35/x
  3. Step 3: Cross multiply
    164.28x = 226.79 × 115.35
  4. Step 4: Simplify right side
    164.28x = 26,160.23
  5. Step 5: Solve for x
    x = 26,160.23/164.28
  6. Step 6: Final answer
    x = 159.24

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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.