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Finding the Fourth Proportional to 2,000.43, 2,999.61 and 766.89

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Solution

The fourth proportional to 2,000.43, 2,999.61 and 766.89 is: 1,149.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.43 : 2,999.61 = 766.89 : x
  2. Step 2: Convert to fraction form
    2,000.43/2,999.61 = 766.89/x
  3. Step 3: Cross multiply
    2,000.43x = 2,999.61 × 766.89
  4. Step 4: Simplify right side
    2,000.43x = 2,300,370.91
  5. Step 5: Solve for x
    x = 2,300,370.91/2,000.43
  6. Step 6: Final answer
    x = 1,149.94

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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.