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Finding the Fourth Proportional to 372.58, 514.19 and 225.21

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Solution

The fourth proportional to 372.58, 514.19 and 225.21 is: 310.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.58 : 514.19 = 225.21 : x
  2. Step 2: Convert to fraction form
    372.58/514.19 = 225.21/x
  3. Step 3: Cross multiply
    372.58x = 514.19 × 225.21
  4. Step 4: Simplify right side
    372.58x = 115,800.73
  5. Step 5: Solve for x
    x = 115,800.73/372.58
  6. Step 6: Final answer
    x = 310.81

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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.