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Finding the Fourth Proportional to 627.64, 940.27 and 353.92

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Solution

The fourth proportional to 627.64, 940.27 and 353.92 is: 530.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.64 : 940.27 = 353.92 : x
  2. Step 2: Convert to fraction form
    627.64/940.27 = 353.92/x
  3. Step 3: Cross multiply
    627.64x = 940.27 × 353.92
  4. Step 4: Simplify right side
    627.64x = 332,780.36
  5. Step 5: Solve for x
    x = 332,780.36/627.64
  6. Step 6: Final answer
    x = 530.21

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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.