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Finding the Fourth Proportional to 376.97, 521.03 and 347.81

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Solution

The fourth proportional to 376.97, 521.03 and 347.81 is: 480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.97 : 521.03 = 347.81 : x
  2. Step 2: Convert to fraction form
    376.97/521.03 = 347.81/x
  3. Step 3: Cross multiply
    376.97x = 521.03 × 347.81
  4. Step 4: Simplify right side
    376.97x = 181,217.71
  5. Step 5: Solve for x
    x = 181,217.71/376.97
  6. Step 6: Final answer
    x = 480.73

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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.