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Finding the Fourth Proportional to 274.08, 411.16 and 171.16

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Solution

The fourth proportional to 274.08, 411.16 and 171.16 is: 256.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.08 : 411.16 = 171.16 : x
  2. Step 2: Convert to fraction form
    274.08/411.16 = 171.16/x
  3. Step 3: Cross multiply
    274.08x = 411.16 × 171.16
  4. Step 4: Simplify right side
    274.08x = 70,374.15
  5. Step 5: Solve for x
    x = 70,374.15/274.08
  6. Step 6: Final answer
    x = 256.76

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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.