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Finding the Fourth Proportional to 739.72, 1,110.02 and 664.08

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Solution

The fourth proportional to 739.72, 1,110.02 and 664.08 is: 996.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.72 : 1,110.02 = 664.08 : x
  2. Step 2: Convert to fraction form
    739.72/1,110.02 = 664.08/x
  3. Step 3: Cross multiply
    739.72x = 1,110.02 × 664.08
  4. Step 4: Simplify right side
    739.72x = 737,142.08
  5. Step 5: Solve for x
    x = 737,142.08/739.72
  6. Step 6: Final answer
    x = 996.52

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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.