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Finding the Fourth Proportional to 889.00, 1,226.94 and 641.14

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Solution

The fourth proportional to 889.00, 1,226.94 and 641.14 is: 884.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.00 : 1,226.94 = 641.14 : x
  2. Step 2: Convert to fraction form
    889.00/1,226.94 = 641.14/x
  3. Step 3: Cross multiply
    889.00x = 1,226.94 × 641.14
  4. Step 4: Simplify right side
    889.00x = 786,632.57
  5. Step 5: Solve for x
    x = 786,632.57/889.00
  6. Step 6: Final answer
    x = 884.86

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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.