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Finding the Fourth Proportional to 371.98, 513.36 and 206.25

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Solution

The fourth proportional to 371.98, 513.36 and 206.25 is: 284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.98 : 513.36 = 206.25 : x
  2. Step 2: Convert to fraction form
    371.98/513.36 = 206.25/x
  3. Step 3: Cross multiply
    371.98x = 513.36 × 206.25
  4. Step 4: Simplify right side
    371.98x = 105,879.15
  5. Step 5: Solve for x
    x = 105,879.15/371.98
  6. Step 6: Final answer
    x = 284.63

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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.