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Finding the Fourth Proportional to 619.15, 853.73 and 583.38

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Solution

The fourth proportional to 619.15, 853.73 and 583.38 is: 804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.15 : 853.73 = 583.38 : x
  2. Step 2: Convert to fraction form
    619.15/853.73 = 583.38/x
  3. Step 3: Cross multiply
    619.15x = 853.73 × 583.38
  4. Step 4: Simplify right side
    619.15x = 498,049.01
  5. Step 5: Solve for x
    x = 498,049.01/619.15
  6. Step 6: Final answer
    x = 804.41

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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.