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Finding the Fourth Proportional to 627.40, 941.10 and 443.80

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Solution

The fourth proportional to 627.40, 941.10 and 443.80 is: 665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.40 : 941.10 = 443.80 : x
  2. Step 2: Convert to fraction form
    627.40/941.10 = 443.80/x
  3. Step 3: Cross multiply
    627.40x = 941.10 × 443.80
  4. Step 4: Simplify right side
    627.40x = 417,660.18
  5. Step 5: Solve for x
    x = 417,660.18/627.40
  6. Step 6: Final answer
    x = 665.70

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.