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Finding the Fourth Proportional to 376.20, 563.72 and 193.72

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Solution

The fourth proportional to 376.20, 563.72 and 193.72 is: 290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.20 : 563.72 = 193.72 : x
  2. Step 2: Convert to fraction form
    376.20/563.72 = 193.72/x
  3. Step 3: Cross multiply
    376.20x = 563.72 × 193.72
  4. Step 4: Simplify right side
    376.20x = 109,203.84
  5. Step 5: Solve for x
    x = 109,203.84/376.20
  6. Step 6: Final answer
    x = 290.28

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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.