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Finding the Fourth Proportional to 274.55, 381.53 and 271.10

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Solution

The fourth proportional to 274.55, 381.53 and 271.10 is: 376.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.55 : 381.53 = 271.10 : x
  2. Step 2: Convert to fraction form
    274.55/381.53 = 271.10/x
  3. Step 3: Cross multiply
    274.55x = 381.53 × 271.10
  4. Step 4: Simplify right side
    274.55x = 103,434.41
  5. Step 5: Solve for x
    x = 103,434.41/274.55
  6. Step 6: Final answer
    x = 376.75

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.