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Finding the Fourth Proportional to 376.10, 519.20 and 245.18

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Solution

The fourth proportional to 376.10, 519.20 and 245.18 is: 338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.10 : 519.20 = 245.18 : x
  2. Step 2: Convert to fraction form
    376.10/519.20 = 245.18/x
  3. Step 3: Cross multiply
    376.10x = 519.20 × 245.18
  4. Step 4: Simplify right side
    376.10x = 127,297.46
  5. Step 5: Solve for x
    x = 127,297.46/376.10
  6. Step 6: Final answer
    x = 338.47

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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.