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Finding the Fourth Proportional to 376.26, 565.41 and 193.79

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Solution

The fourth proportional to 376.26, 565.41 and 193.79 is: 291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.26 : 565.41 = 193.79 : x
  2. Step 2: Convert to fraction form
    376.26/565.41 = 193.79/x
  3. Step 3: Cross multiply
    376.26x = 565.41 × 193.79
  4. Step 4: Simplify right side
    376.26x = 109,572.94
  5. Step 5: Solve for x
    x = 109,572.94/376.26
  6. Step 6: Final answer
    x = 291.21

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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.