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Finding the Fourth Proportional to 171.96, 258.27 and 164.28

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Solution

The fourth proportional to 171.96, 258.27 and 164.28 is: 246.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.96 : 258.27 = 164.28 : x
  2. Step 2: Convert to fraction form
    171.96/258.27 = 164.28/x
  3. Step 3: Cross multiply
    171.96x = 258.27 × 164.28
  4. Step 4: Simplify right side
    171.96x = 42,428.60
  5. Step 5: Solve for x
    x = 42,428.60/171.96
  6. Step 6: Final answer
    x = 246.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.