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Finding the Fourth Proportional to 625.52, 936.32 and 393.62

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Solution

The fourth proportional to 625.52, 936.32 and 393.62 is: 589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.52 : 936.32 = 393.62 : x
  2. Step 2: Convert to fraction form
    625.52/936.32 = 393.62/x
  3. Step 3: Cross multiply
    625.52x = 936.32 × 393.62
  4. Step 4: Simplify right side
    625.52x = 368,554.28
  5. Step 5: Solve for x
    x = 368,554.28/625.52
  6. Step 6: Final answer
    x = 589.20

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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.