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Finding the Fourth Proportional to 372.87, 514.35 and 225.45

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Solution

The fourth proportional to 372.87, 514.35 and 225.45 is: 310.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.87 : 514.35 = 225.45 : x
  2. Step 2: Convert to fraction form
    372.87/514.35 = 225.45/x
  3. Step 3: Cross multiply
    372.87x = 514.35 × 225.45
  4. Step 4: Simplify right side
    372.87x = 115,960.21
  5. Step 5: Solve for x
    x = 115,960.21/372.87
  6. Step 6: Final answer
    x = 310.99

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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.