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Finding the Fourth Proportional to 668.83, 1,001.79 and 551.97

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Solution

The fourth proportional to 668.83, 1,001.79 and 551.97 is: 826.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.83 : 1,001.79 = 551.97 : x
  2. Step 2: Convert to fraction form
    668.83/1,001.79 = 551.97/x
  3. Step 3: Cross multiply
    668.83x = 1,001.79 × 551.97
  4. Step 4: Simplify right side
    668.83x = 552,958.03
  5. Step 5: Solve for x
    x = 552,958.03/668.83
  6. Step 6: Final answer
    x = 826.75

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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.