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Finding the Fourth Proportional to 773.53, 1,067.45 and 442.00

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Solution

The fourth proportional to 773.53, 1,067.45 and 442.00 is: 609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.53 : 1,067.45 = 442.00 : x
  2. Step 2: Convert to fraction form
    773.53/1,067.45 = 442.00/x
  3. Step 3: Cross multiply
    773.53x = 1,067.45 × 442.00
  4. Step 4: Simplify right side
    773.53x = 471,812.02
  5. Step 5: Solve for x
    x = 471,812.02/773.53
  6. Step 6: Final answer
    x = 609.95

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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.