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Finding the Fourth Proportional to 627.55, 941.22 and 385.56

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Solution

The fourth proportional to 627.55, 941.22 and 385.56 is: 578.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.55 : 941.22 = 385.56 : x
  2. Step 2: Convert to fraction form
    627.55/941.22 = 385.56/x
  3. Step 3: Cross multiply
    627.55x = 941.22 × 385.56
  4. Step 4: Simplify right side
    627.55x = 362,896.78
  5. Step 5: Solve for x
    x = 362,896.78/627.55
  6. Step 6: Final answer
    x = 578.28

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Double scale
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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.