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Finding the Fourth Proportional to 669.60, 1,004.32 and 182.54

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Solution

The fourth proportional to 669.60, 1,004.32 and 182.54 is: 273.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.60 : 1,004.32 = 182.54 : x
  2. Step 2: Convert to fraction form
    669.60/1,004.32 = 182.54/x
  3. Step 3: Cross multiply
    669.60x = 1,004.32 × 182.54
  4. Step 4: Simplify right side
    669.60x = 183,323.09
  5. Step 5: Solve for x
    x = 183,323.09/669.60
  6. Step 6: Final answer
    x = 273.78

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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.