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Finding the Fourth Proportional to 376.97, 563.81 and 342.47

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Solution

The fourth proportional to 376.97, 563.81 and 342.47 is: 512.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.97 : 563.81 = 342.47 : x
  2. Step 2: Convert to fraction form
    376.97/563.81 = 342.47/x
  3. Step 3: Cross multiply
    376.97x = 563.81 × 342.47
  4. Step 4: Simplify right side
    376.97x = 193,083.48
  5. Step 5: Solve for x
    x = 193,083.48/376.97
  6. Step 6: Final answer
    x = 512.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.