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Finding the Fourth Proportional to 619.03, 929.09 and 402.85

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Solution

The fourth proportional to 619.03, 929.09 and 402.85 is: 604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.03 : 929.09 = 402.85 : x
  2. Step 2: Convert to fraction form
    619.03/929.09 = 402.85/x
  3. Step 3: Cross multiply
    619.03x = 929.09 × 402.85
  4. Step 4: Simplify right side
    619.03x = 374,283.91
  5. Step 5: Solve for x
    x = 374,283.91/619.03
  6. Step 6: Final answer
    x = 604.63

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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.