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Finding the Fourth Proportional to 644.24, 958.09 and 623.73

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Solution

The fourth proportional to 644.24, 958.09 and 623.73 is: 927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.24 : 958.09 = 623.73 : x
  2. Step 2: Convert to fraction form
    644.24/958.09 = 623.73/x
  3. Step 3: Cross multiply
    644.24x = 958.09 × 623.73
  4. Step 4: Simplify right side
    644.24x = 597,590.92
  5. Step 5: Solve for x
    x = 597,590.92/644.24
  6. Step 6: Final answer
    x = 927.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.