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Finding the Fourth Proportional to 619.09, 853.89 and 462.07

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Solution

The fourth proportional to 619.09, 853.89 and 462.07 is: 637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.09 : 853.89 = 462.07 : x
  2. Step 2: Convert to fraction form
    619.09/853.89 = 462.07/x
  3. Step 3: Cross multiply
    619.09x = 853.89 × 462.07
  4. Step 4: Simplify right side
    619.09x = 394,556.95
  5. Step 5: Solve for x
    x = 394,556.95/619.09
  6. Step 6: Final answer
    x = 637.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.