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Finding the Fourth Proportional to 561.27, 775.38 and 444.03

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Solution

The fourth proportional to 561.27, 775.38 and 444.03 is: 613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.27 : 775.38 = 444.03 : x
  2. Step 2: Convert to fraction form
    561.27/775.38 = 444.03/x
  3. Step 3: Cross multiply
    561.27x = 775.38 × 444.03
  4. Step 4: Simplify right side
    561.27x = 344,291.98
  5. Step 5: Solve for x
    x = 344,291.98/561.27
  6. Step 6: Final answer
    x = 613.42

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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.