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Finding the Fourth Proportional to 274.77, 381.67 and 270.36

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Solution

The fourth proportional to 274.77, 381.67 and 270.36 is: 375.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.77 : 381.67 = 270.36 : x
  2. Step 2: Convert to fraction form
    274.77/381.67 = 270.36/x
  3. Step 3: Cross multiply
    274.77x = 381.67 × 270.36
  4. Step 4: Simplify right side
    274.77x = 103,187.63
  5. Step 5: Solve for x
    x = 103,187.63/274.77
  6. Step 6: Final answer
    x = 375.54

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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.