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Finding the Fourth Proportional to 625.24, 935.94 and 393.31

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Solution

The fourth proportional to 625.24, 935.94 and 393.31 is: 588.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.24 : 935.94 = 393.31 : x
  2. Step 2: Convert to fraction form
    625.24/935.94 = 393.31/x
  3. Step 3: Cross multiply
    625.24x = 935.94 × 393.31
  4. Step 4: Simplify right side
    625.24x = 368,114.56
  5. Step 5: Solve for x
    x = 368,114.56/625.24
  6. Step 6: Final answer
    x = 588.76

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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.