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Finding the Fourth Proportional to 376.66, 519.60 and 245.71

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Solution

The fourth proportional to 376.66, 519.60 and 245.71 is: 338.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.66 : 519.60 = 245.71 : x
  2. Step 2: Convert to fraction form
    376.66/519.60 = 245.71/x
  3. Step 3: Cross multiply
    376.66x = 519.60 × 245.71
  4. Step 4: Simplify right side
    376.66x = 127,670.92
  5. Step 5: Solve for x
    x = 127,670.92/376.66
  6. Step 6: Final answer
    x = 338.96

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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.