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Finding the Fourth Proportional to 669.38, 1,004.04 and 376.83

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Solution

The fourth proportional to 669.38, 1,004.04 and 376.83 is: 565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.38 : 1,004.04 = 376.83 : x
  2. Step 2: Convert to fraction form
    669.38/1,004.04 = 376.83/x
  3. Step 3: Cross multiply
    669.38x = 1,004.04 × 376.83
  4. Step 4: Simplify right side
    669.38x = 378,352.39
  5. Step 5: Solve for x
    x = 378,352.39/669.38
  6. Step 6: Final answer
    x = 565.23

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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.