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Finding the Fourth Proportional to 171.24, 234.56 and 164.76

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Solution

The fourth proportional to 171.24, 234.56 and 164.76 is: 225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.24 : 234.56 = 164.76 : x
  2. Step 2: Convert to fraction form
    171.24/234.56 = 164.76/x
  3. Step 3: Cross multiply
    171.24x = 234.56 × 164.76
  4. Step 4: Simplify right side
    171.24x = 38,646.11
  5. Step 5: Solve for x
    x = 38,646.11/171.24
  6. Step 6: Final answer
    x = 225.68

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.