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Finding the Fourth Proportional to 604.91, 907.21 and 239.49

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Solution

The fourth proportional to 604.91, 907.21 and 239.49 is: 359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.91 : 907.21 = 239.49 : x
  2. Step 2: Convert to fraction form
    604.91/907.21 = 239.49/x
  3. Step 3: Cross multiply
    604.91x = 907.21 × 239.49
  4. Step 4: Simplify right side
    604.91x = 217,267.72
  5. Step 5: Solve for x
    x = 217,267.72/604.91
  6. Step 6: Final answer
    x = 359.17

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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.