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Finding the Fourth Proportional to 677.11, 934.64 and 481.19

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Solution

The fourth proportional to 677.11, 934.64 and 481.19 is: 664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.11 : 934.64 = 481.19 : x
  2. Step 2: Convert to fraction form
    677.11/934.64 = 481.19/x
  3. Step 3: Cross multiply
    677.11x = 934.64 × 481.19
  4. Step 4: Simplify right side
    677.11x = 449,739.40
  5. Step 5: Solve for x
    x = 449,739.40/677.11
  6. Step 6: Final answer
    x = 664.20

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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.