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Finding the Fourth Proportional to 604.78, 906.46 and 239.67

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Solution

The fourth proportional to 604.78, 906.46 and 239.67 is: 359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.78 : 906.46 = 239.67 : x
  2. Step 2: Convert to fraction form
    604.78/906.46 = 239.67/x
  3. Step 3: Cross multiply
    604.78x = 906.46 × 239.67
  4. Step 4: Simplify right side
    604.78x = 217,250.67
  5. Step 5: Solve for x
    x = 217,250.67/604.78
  6. Step 6: Final answer
    x = 359.22

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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.