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Finding the Fourth Proportional to 518.03, 775.52 and 371.31

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Solution

The fourth proportional to 518.03, 775.52 and 371.31 is: 555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.03 : 775.52 = 371.31 : x
  2. Step 2: Convert to fraction form
    518.03/775.52 = 371.31/x
  3. Step 3: Cross multiply
    518.03x = 775.52 × 371.31
  4. Step 4: Simplify right side
    518.03x = 287,958.33
  5. Step 5: Solve for x
    x = 287,958.33/518.03
  6. Step 6: Final answer
    x = 555.87

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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.