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Finding the Fourth Proportional to 372.25, 513.98 and 274.15

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Solution

The fourth proportional to 372.25, 513.98 and 274.15 is: 378.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.25 : 513.98 = 274.15 : x
  2. Step 2: Convert to fraction form
    372.25/513.98 = 274.15/x
  3. Step 3: Cross multiply
    372.25x = 513.98 × 274.15
  4. Step 4: Simplify right side
    372.25x = 140,907.62
  5. Step 5: Solve for x
    x = 140,907.62/372.25
  6. Step 6: Final answer
    x = 378.53

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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.