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Finding the Fourth Proportional to 773.63, 1,067.67 and 479.06

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Solution

The fourth proportional to 773.63, 1,067.67 and 479.06 is: 661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.63 : 1,067.67 = 479.06 : x
  2. Step 2: Convert to fraction form
    773.63/1,067.67 = 479.06/x
  3. Step 3: Cross multiply
    773.63x = 1,067.67 × 479.06
  4. Step 4: Simplify right side
    773.63x = 511,477.99
  5. Step 5: Solve for x
    x = 511,477.99/773.63
  6. Step 6: Final answer
    x = 661.14

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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.