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Finding the Fourth Proportional to 627.43, 941.72 and 319.50

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Solution

The fourth proportional to 627.43, 941.72 and 319.50 is: 479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.43 : 941.72 = 319.50 : x
  2. Step 2: Convert to fraction form
    627.43/941.72 = 319.50/x
  3. Step 3: Cross multiply
    627.43x = 941.72 × 319.50
  4. Step 4: Simplify right side
    627.43x = 300,879.14
  5. Step 5: Solve for x
    x = 300,879.14/627.43
  6. Step 6: Final answer
    x = 479.54

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Double scale
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Similar ratio
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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.