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Finding the Fourth Proportional to 627.75, 941.78 and 216.77

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Solution

The fourth proportional to 627.75, 941.78 and 216.77 is: 325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.75 : 941.78 = 216.77 : x
  2. Step 2: Convert to fraction form
    627.75/941.78 = 216.77/x
  3. Step 3: Cross multiply
    627.75x = 941.78 × 216.77
  4. Step 4: Simplify right side
    627.75x = 204,143.86
  5. Step 5: Solve for x
    x = 204,143.86/627.75
  6. Step 6: Final answer
    x = 325.20

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1.5x scale

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.