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Finding the Fourth Proportional to 372.03, 513.32 and 255.75

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Solution

The fourth proportional to 372.03, 513.32 and 255.75 is: 352.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.03 : 513.32 = 255.75 : x
  2. Step 2: Convert to fraction form
    372.03/513.32 = 255.75/x
  3. Step 3: Cross multiply
    372.03x = 513.32 × 255.75
  4. Step 4: Simplify right side
    372.03x = 131,280.31
  5. Step 5: Solve for x
    x = 131,280.31/372.03
  6. Step 6: Final answer
    x = 352.88

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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.