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Finding the Fourth Proportional to 604.12, 906.45 and 330.12

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Solution

The fourth proportional to 604.12, 906.45 and 330.12 is: 495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.12 : 906.45 = 330.12 : x
  2. Step 2: Convert to fraction form
    604.12/906.45 = 330.12/x
  3. Step 3: Cross multiply
    604.12x = 906.45 × 330.12
  4. Step 4: Simplify right side
    604.12x = 299,232.74
  5. Step 5: Solve for x
    x = 299,232.74/604.12
  6. Step 6: Final answer
    x = 495.32

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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.