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Finding the Fourth Proportional to 604.89, 907.47 and 239.78

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Solution

The fourth proportional to 604.89, 907.47 and 239.78 is: 359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.89 : 907.47 = 239.78 : x
  2. Step 2: Convert to fraction form
    604.89/907.47 = 239.78/x
  3. Step 3: Cross multiply
    604.89x = 907.47 × 239.78
  4. Step 4: Simplify right side
    604.89x = 217,595.43
  5. Step 5: Solve for x
    x = 217,595.43/604.89
  6. Step 6: Final answer
    x = 359.73

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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.