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Finding the Fourth Proportional to 773.54, 1,067.50 and 424.21

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Solution

The fourth proportional to 773.54, 1,067.50 and 424.21 is: 585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.54 : 1,067.50 = 424.21 : x
  2. Step 2: Convert to fraction form
    773.54/1,067.50 = 424.21/x
  3. Step 3: Cross multiply
    773.54x = 1,067.50 × 424.21
  4. Step 4: Simplify right side
    773.54x = 452,844.18
  5. Step 5: Solve for x
    x = 452,844.18/773.54
  6. Step 6: Final answer
    x = 585.42

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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.