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Finding the Fourth Proportional to 392.72, 591.92 and 376.26

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Solution

The fourth proportional to 392.72, 591.92 and 376.26 is: 567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.72 : 591.92 = 376.26 : x
  2. Step 2: Convert to fraction form
    392.72/591.92 = 376.26/x
  3. Step 3: Cross multiply
    392.72x = 591.92 × 376.26
  4. Step 4: Simplify right side
    392.72x = 222,715.82
  5. Step 5: Solve for x
    x = 222,715.82/392.72
  6. Step 6: Final answer
    x = 567.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.