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Finding the Fourth Proportional to 619.38, 928.94 and 186.44

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Solution

The fourth proportional to 619.38, 928.94 and 186.44 is: 279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.38 : 928.94 = 186.44 : x
  2. Step 2: Convert to fraction form
    619.38/928.94 = 186.44/x
  3. Step 3: Cross multiply
    619.38x = 928.94 × 186.44
  4. Step 4: Simplify right side
    619.38x = 173,186.00
  5. Step 5: Solve for x
    x = 173,186.00/619.38
  6. Step 6: Final answer
    x = 279.61

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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.