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Finding the Fourth Proportional to 901.96, 1,351.73 and 668.97

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Solution

The fourth proportional to 901.96, 1,351.73 and 668.97 is: 1,002.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.96 : 1,351.73 = 668.97 : x
  2. Step 2: Convert to fraction form
    901.96/1,351.73 = 668.97/x
  3. Step 3: Cross multiply
    901.96x = 1,351.73 × 668.97
  4. Step 4: Simplify right side
    901.96x = 904,268.49
  5. Step 5: Solve for x
    x = 904,268.49/901.96
  6. Step 6: Final answer
    x = 1,002.56

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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.