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Finding the Fourth Proportional to 376.67, 519.32 and 310.05

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Solution

The fourth proportional to 376.67, 519.32 and 310.05 is: 427.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.67 : 519.32 = 310.05 : x
  2. Step 2: Convert to fraction form
    376.67/519.32 = 310.05/x
  3. Step 3: Cross multiply
    376.67x = 519.32 × 310.05
  4. Step 4: Simplify right side
    376.67x = 161,015.94
  5. Step 5: Solve for x
    x = 161,015.94/376.67
  6. Step 6: Final answer
    x = 427.47

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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.