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Finding the Fourth Proportional to 773.74, 1,067.31 and 508.34

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Solution

The fourth proportional to 773.74, 1,067.31 and 508.34 is: 701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.74 : 1,067.31 = 508.34 : x
  2. Step 2: Convert to fraction form
    773.74/1,067.31 = 508.34/x
  3. Step 3: Cross multiply
    773.74x = 1,067.31 × 508.34
  4. Step 4: Simplify right side
    773.74x = 542,556.37
  5. Step 5: Solve for x
    x = 542,556.37/773.74
  6. Step 6: Final answer
    x = 701.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.