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Finding the Fourth Proportional to 668.86, 1,003.03 and 230.03

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Solution

The fourth proportional to 668.86, 1,003.03 and 230.03 is: 344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.86 : 1,003.03 = 230.03 : x
  2. Step 2: Convert to fraction form
    668.86/1,003.03 = 230.03/x
  3. Step 3: Cross multiply
    668.86x = 1,003.03 × 230.03
  4. Step 4: Simplify right side
    668.86x = 230,721.98
  5. Step 5: Solve for x
    x = 230,721.98/668.86
  6. Step 6: Final answer
    x = 344.95

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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.