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Finding the Fourth Proportional to 773.47, 1,067.36 and 424.16

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Solution

The fourth proportional to 773.47, 1,067.36 and 424.16 is: 585.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.47 : 1,067.36 = 424.16 : x
  2. Step 2: Convert to fraction form
    773.47/1,067.36 = 424.16/x
  3. Step 3: Cross multiply
    773.47x = 1,067.36 × 424.16
  4. Step 4: Simplify right side
    773.47x = 452,730.35
  5. Step 5: Solve for x
    x = 452,730.35/773.47
  6. Step 6: Final answer
    x = 585.32

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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.