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Finding the Fourth Proportional to 846.26, 1,267.70 and 662.79

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Solution

The fourth proportional to 846.26, 1,267.70 and 662.79 is: 992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.26 : 1,267.70 = 662.79 : x
  2. Step 2: Convert to fraction form
    846.26/1,267.70 = 662.79/x
  3. Step 3: Cross multiply
    846.26x = 1,267.70 × 662.79
  4. Step 4: Simplify right side
    846.26x = 840,215.57
  5. Step 5: Solve for x
    x = 840,215.57/846.26
  6. Step 6: Final answer
    x = 992.86

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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.