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Finding the Fourth Proportional to 604.35, 906.47 and 193.79

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Solution

The fourth proportional to 604.35, 906.47 and 193.79 is: 290.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.35 : 906.47 = 193.79 : x
  2. Step 2: Convert to fraction form
    604.35/906.47 = 193.79/x
  3. Step 3: Cross multiply
    604.35x = 906.47 × 193.79
  4. Step 4: Simplify right side
    604.35x = 175,660.05
  5. Step 5: Solve for x
    x = 175,660.05/604.35
  6. Step 6: Final answer
    x = 290.66

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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.