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Finding the Fourth Proportional to 397, 547.86 and 241.78

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Solution

The fourth proportional to 397, 547.86 and 241.78 is: 333.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    397 : 547.86 = 241.78 : x
  2. Step 2: Convert to fraction form
    397/547.86 = 241.78/x
  3. Step 3: Cross multiply
    397x = 547.86 × 241.78
  4. Step 4: Simplify right side
    397x = 132,461.59
  5. Step 5: Solve for x
    x = 132,461.59/397
  6. Step 6: Final answer
    x = 333.66

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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.