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Finding the Fourth Proportional to 372.47, 513.87 and 225.05

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Solution

The fourth proportional to 372.47, 513.87 and 225.05 is: 310.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.47 : 513.87 = 225.05 : x
  2. Step 2: Convert to fraction form
    372.47/513.87 = 225.05/x
  3. Step 3: Cross multiply
    372.47x = 513.87 × 225.05
  4. Step 4: Simplify right side
    372.47x = 115,642.75
  5. Step 5: Solve for x
    x = 115,642.75/372.47
  6. Step 6: Final answer
    x = 310.48

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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.