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Finding the Fourth Proportional to 772.87, 1,066.56 and 441.27

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Solution

The fourth proportional to 772.87, 1,066.56 and 441.27 is: 608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.87 : 1,066.56 = 441.27 : x
  2. Step 2: Convert to fraction form
    772.87/1,066.56 = 441.27/x
  3. Step 3: Cross multiply
    772.87x = 1,066.56 × 441.27
  4. Step 4: Simplify right side
    772.87x = 470,640.93
  5. Step 5: Solve for x
    x = 470,640.93/772.87
  6. Step 6: Final answer
    x = 608.95

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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.