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Finding the Fourth Proportional to 604.02, 905.78 and 238.88

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Solution

The fourth proportional to 604.02, 905.78 and 238.88 is: 358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.02 : 905.78 = 238.88 : x
  2. Step 2: Convert to fraction form
    604.02/905.78 = 238.88/x
  3. Step 3: Cross multiply
    604.02x = 905.78 × 238.88
  4. Step 4: Simplify right side
    604.02x = 216,372.73
  5. Step 5: Solve for x
    x = 216,372.73/604.02
  6. Step 6: Final answer
    x = 358.22

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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.