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Finding the Fourth Proportional to 277.20, 380.70 and 241.20

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Solution

The fourth proportional to 277.20, 380.70 and 241.20 is: 331.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.20 : 380.70 = 241.20 : x
  2. Step 2: Convert to fraction form
    277.20/380.70 = 241.20/x
  3. Step 3: Cross multiply
    277.20x = 380.70 × 241.20
  4. Step 4: Simplify right side
    277.20x = 91,824.84
  5. Step 5: Solve for x
    x = 91,824.84/277.20
  6. Step 6: Final answer
    x = 331.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.