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Finding the Fourth Proportional to 371.88, 557.36 and 263.44

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Solution

The fourth proportional to 371.88, 557.36 and 263.44 is: 394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.88 : 557.36 = 263.44 : x
  2. Step 2: Convert to fraction form
    371.88/557.36 = 263.44/x
  3. Step 3: Cross multiply
    371.88x = 557.36 × 263.44
  4. Step 4: Simplify right side
    371.88x = 146,829.20
  5. Step 5: Solve for x
    x = 146,829.20/371.88
  6. Step 6: Final answer
    x = 394.83

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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.