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Finding the Fourth Proportional to 627.77, 867.19 and 441.20

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Solution

The fourth proportional to 627.77, 867.19 and 441.20 is: 609.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.77 : 867.19 = 441.20 : x
  2. Step 2: Convert to fraction form
    627.77/867.19 = 441.20/x
  3. Step 3: Cross multiply
    627.77x = 867.19 × 441.20
  4. Step 4: Simplify right side
    627.77x = 382,604.23
  5. Step 5: Solve for x
    x = 382,604.23/627.77
  6. Step 6: Final answer
    x = 609.47

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Double scale
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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.