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Finding the Fourth Proportional to 627.30, 939.57 and 353.24

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Solution

The fourth proportional to 627.30, 939.57 and 353.24 is: 529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.30 : 939.57 = 353.24 : x
  2. Step 2: Convert to fraction form
    627.30/939.57 = 353.24/x
  3. Step 3: Cross multiply
    627.30x = 939.57 × 353.24
  4. Step 4: Simplify right side
    627.30x = 331,889.01
  5. Step 5: Solve for x
    x = 331,889.01/627.30
  6. Step 6: Final answer
    x = 529.08

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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.