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Finding the Fourth Proportional to 667.79, 999.19 and 552.29

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Solution

The fourth proportional to 667.79, 999.19 and 552.29 is: 826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.79 : 999.19 = 552.29 : x
  2. Step 2: Convert to fraction form
    667.79/999.19 = 552.29/x
  3. Step 3: Cross multiply
    667.79x = 999.19 × 552.29
  4. Step 4: Simplify right side
    667.79x = 551,843.66
  5. Step 5: Solve for x
    x = 551,843.66/667.79
  6. Step 6: Final answer
    x = 826.37

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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.