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Finding the Fourth Proportional to 310.52, 427.55 and 271.71

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Solution

The fourth proportional to 310.52, 427.55 and 271.71 is: 374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.52 : 427.55 = 271.71 : x
  2. Step 2: Convert to fraction form
    310.52/427.55 = 271.71/x
  3. Step 3: Cross multiply
    310.52x = 427.55 × 271.71
  4. Step 4: Simplify right side
    310.52x = 116,168.25
  5. Step 5: Solve for x
    x = 116,168.25/310.52
  6. Step 6: Final answer
    x = 374.11

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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.