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Finding the Fourth Proportional to 644.01, 888.27 and 444.91

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Solution

The fourth proportional to 644.01, 888.27 and 444.91 is: 613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.01 : 888.27 = 444.91 : x
  2. Step 2: Convert to fraction form
    644.01/888.27 = 444.91/x
  3. Step 3: Cross multiply
    644.01x = 888.27 × 444.91
  4. Step 4: Simplify right side
    644.01x = 395,200.21
  5. Step 5: Solve for x
    x = 395,200.21/644.01
  6. Step 6: Final answer
    x = 613.66

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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.