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Finding the Fourth Proportional to 277.17, 381.56 and 240.12

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Solution

The fourth proportional to 277.17, 381.56 and 240.12 is: 330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.17 : 381.56 = 240.12 : x
  2. Step 2: Convert to fraction form
    277.17/381.56 = 240.12/x
  3. Step 3: Cross multiply
    277.17x = 381.56 × 240.12
  4. Step 4: Simplify right side
    277.17x = 91,618.99
  5. Step 5: Solve for x
    x = 91,618.99/277.17
  6. Step 6: Final answer
    x = 330.55

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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.