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Finding the Fourth Proportional to 604.95, 905.46 and 330.36

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Solution

The fourth proportional to 604.95, 905.46 and 330.36 is: 494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.95 : 905.46 = 330.36 : x
  2. Step 2: Convert to fraction form
    604.95/905.46 = 330.36/x
  3. Step 3: Cross multiply
    604.95x = 905.46 × 330.36
  4. Step 4: Simplify right side
    604.95x = 299,127.77
  5. Step 5: Solve for x
    x = 299,127.77/604.95
  6. Step 6: Final answer
    x = 494.47

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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.