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Finding the Fourth Proportional to 669.72, 1,004.57 and 446.88

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Solution

The fourth proportional to 669.72, 1,004.57 and 446.88 is: 670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.72 : 1,004.57 = 446.88 : x
  2. Step 2: Convert to fraction form
    669.72/1,004.57 = 446.88/x
  3. Step 3: Cross multiply
    669.72x = 1,004.57 × 446.88
  4. Step 4: Simplify right side
    669.72x = 448,919.73
  5. Step 5: Solve for x
    x = 448,919.73/669.72
  6. Step 6: Final answer
    x = 670.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.