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Finding the Fourth Proportional to 376.32, 519.68 and 310.08

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Solution

The fourth proportional to 376.32, 519.68 and 310.08 is: 428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.32 : 519.68 = 310.08 : x
  2. Step 2: Convert to fraction form
    376.32/519.68 = 310.08/x
  3. Step 3: Cross multiply
    376.32x = 519.68 × 310.08
  4. Step 4: Simplify right side
    376.32x = 161,142.37
  5. Step 5: Solve for x
    x = 161,142.37/376.32
  6. Step 6: Final answer
    x = 428.21

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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.