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Finding the Fourth Proportional to 371.07, 511.79 and 254.97

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Solution

The fourth proportional to 371.07, 511.79 and 254.97 is: 351.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.07 : 511.79 = 254.97 : x
  2. Step 2: Convert to fraction form
    371.07/511.79 = 254.97/x
  3. Step 3: Cross multiply
    371.07x = 511.79 × 254.97
  4. Step 4: Simplify right side
    371.07x = 130,489.82
  5. Step 5: Solve for x
    x = 130,489.82/371.07
  6. Step 6: Final answer
    x = 351.66

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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.