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Finding the Fourth Proportional to 773.37, 1,067.49 and 479.07

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Solution

The fourth proportional to 773.37, 1,067.49 and 479.07 is: 661.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.37 : 1,067.49 = 479.07 : x
  2. Step 2: Convert to fraction form
    773.37/1,067.49 = 479.07/x
  3. Step 3: Cross multiply
    773.37x = 1,067.49 × 479.07
  4. Step 4: Simplify right side
    773.37x = 511,402.43
  5. Step 5: Solve for x
    x = 511,402.43/773.37
  6. Step 6: Final answer
    x = 661.26

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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.