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Finding the Fourth Proportional to 669.38, 922.44 and 482.54

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Solution

The fourth proportional to 669.38, 922.44 and 482.54 is: 664.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.38 : 922.44 = 482.54 : x
  2. Step 2: Convert to fraction form
    669.38/922.44 = 482.54/x
  3. Step 3: Cross multiply
    669.38x = 922.44 × 482.54
  4. Step 4: Simplify right side
    669.38x = 445,114.20
  5. Step 5: Solve for x
    x = 445,114.20/669.38
  6. Step 6: Final answer
    x = 664.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.