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Finding the Fourth Proportional to 395.96, 591.21 and 371.36

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Solution

The fourth proportional to 395.96, 591.21 and 371.36 is: 554.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.96 : 591.21 = 371.36 : x
  2. Step 2: Convert to fraction form
    395.96/591.21 = 371.36/x
  3. Step 3: Cross multiply
    395.96x = 591.21 × 371.36
  4. Step 4: Simplify right side
    395.96x = 219,553.22
  5. Step 5: Solve for x
    x = 219,553.22/395.96
  6. Step 6: Final answer
    x = 554.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.