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Finding the Fourth Proportional to 604.97, 905.99 and 330.38

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Solution

The fourth proportional to 604.97, 905.99 and 330.38 is: 494.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.97 : 905.99 = 330.38 : x
  2. Step 2: Convert to fraction form
    604.97/905.99 = 330.38/x
  3. Step 3: Cross multiply
    604.97x = 905.99 × 330.38
  4. Step 4: Simplify right side
    604.97x = 299,318.19
  5. Step 5: Solve for x
    x = 299,318.19/604.97
  6. Step 6: Final answer
    x = 494.77

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1.5x scale

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.