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Finding the Fourth Proportional to 2,201.86, 3,303.26 and 641.88

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Solution

The fourth proportional to 2,201.86, 3,303.26 and 641.88 is: 962.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.86 : 3,303.26 = 641.88 : x
  2. Step 2: Convert to fraction form
    2,201.86/3,303.26 = 641.88/x
  3. Step 3: Cross multiply
    2,201.86x = 3,303.26 × 641.88
  4. Step 4: Simplify right side
    2,201.86x = 2,120,296.53
  5. Step 5: Solve for x
    x = 2,120,296.53/2,201.86
  6. Step 6: Final answer
    x = 962.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.