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Finding the Fourth Proportional to 274.92, 379.35 and 171.42

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Solution

The fourth proportional to 274.92, 379.35 and 171.42 is: 236.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.92 : 379.35 = 171.42 : x
  2. Step 2: Convert to fraction form
    274.92/379.35 = 171.42/x
  3. Step 3: Cross multiply
    274.92x = 379.35 × 171.42
  4. Step 4: Simplify right side
    274.92x = 65,028.18
  5. Step 5: Solve for x
    x = 65,028.18/274.92
  6. Step 6: Final answer
    x = 236.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.