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Finding the Fourth Proportional to 627.36, 941.40 and 520.44

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Solution

The fourth proportional to 627.36, 941.40 and 520.44 is: 780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.36 : 941.40 = 520.44 : x
  2. Step 2: Convert to fraction form
    627.36/941.40 = 520.44/x
  3. Step 3: Cross multiply
    627.36x = 941.40 × 520.44
  4. Step 4: Simplify right side
    627.36x = 489,942.22
  5. Step 5: Solve for x
    x = 489,942.22/627.36
  6. Step 6: Final answer
    x = 780.96

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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.