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Finding the Fourth Proportional to 627.57, 941.37 and 612.09

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Solution

The fourth proportional to 627.57, 941.37 and 612.09 is: 918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.57 : 941.37 = 612.09 : x
  2. Step 2: Convert to fraction form
    627.57/941.37 = 612.09/x
  3. Step 3: Cross multiply
    627.57x = 941.37 × 612.09
  4. Step 4: Simplify right side
    627.57x = 576,203.16
  5. Step 5: Solve for x
    x = 576,203.16/627.57
  6. Step 6: Final answer
    x = 918.15

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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.