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Finding the Fourth Proportional to 644.97, 890.06 and 350.24

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Solution

The fourth proportional to 644.97, 890.06 and 350.24 is: 483.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.97 : 890.06 = 350.24 : x
  2. Step 2: Convert to fraction form
    644.97/890.06 = 350.24/x
  3. Step 3: Cross multiply
    644.97x = 890.06 × 350.24
  4. Step 4: Simplify right side
    644.97x = 311,734.61
  5. Step 5: Solve for x
    x = 311,734.61/644.97
  6. Step 6: Final answer
    x = 483.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.