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Finding the Fourth Proportional to 644.09, 958.73 and 614.21

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Solution

The fourth proportional to 644.09, 958.73 and 614.21 is: 914.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.09 : 958.73 = 614.21 : x
  2. Step 2: Convert to fraction form
    644.09/958.73 = 614.21/x
  3. Step 3: Cross multiply
    644.09x = 958.73 × 614.21
  4. Step 4: Simplify right side
    644.09x = 588,853.69
  5. Step 5: Solve for x
    x = 588,853.69/644.09
  6. Step 6: Final answer
    x = 914.25

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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.