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Finding the Fourth Proportional to 604.28, 905.97 and 193.18

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Solution

The fourth proportional to 604.28, 905.97 and 193.18 is: 289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.28 : 905.97 = 193.18 : x
  2. Step 2: Convert to fraction form
    604.28/905.97 = 193.18/x
  3. Step 3: Cross multiply
    604.28x = 905.97 × 193.18
  4. Step 4: Simplify right side
    604.28x = 175,009.79
  5. Step 5: Solve for x
    x = 175,009.79/604.28
  6. Step 6: Final answer
    x = 289.62

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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.