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Finding the Fourth Proportional to 625.37, 936.23 and 439.63

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Solution

The fourth proportional to 625.37, 936.23 and 439.63 is: 658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.37 : 936.23 = 439.63 : x
  2. Step 2: Convert to fraction form
    625.37/936.23 = 439.63/x
  3. Step 3: Cross multiply
    625.37x = 936.23 × 439.63
  4. Step 4: Simplify right side
    625.37x = 411,590.26
  5. Step 5: Solve for x
    x = 411,590.26/625.37
  6. Step 6: Final answer
    x = 658.16

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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.