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Finding the Fourth Proportional to 376.82, 519.84 and 289.34

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Solution

The fourth proportional to 376.82, 519.84 and 289.34 is: 399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.82 : 519.84 = 289.34 : x
  2. Step 2: Convert to fraction form
    376.82/519.84 = 289.34/x
  3. Step 3: Cross multiply
    376.82x = 519.84 × 289.34
  4. Step 4: Simplify right side
    376.82x = 150,410.51
  5. Step 5: Solve for x
    x = 150,410.51/376.82
  6. Step 6: Final answer
    x = 399.16

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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.