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Finding the Fourth Proportional to 619.14, 854.43 and 444.81

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Solution

The fourth proportional to 619.14, 854.43 and 444.81 is: 613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.14 : 854.43 = 444.81 : x
  2. Step 2: Convert to fraction form
    619.14/854.43 = 444.81/x
  3. Step 3: Cross multiply
    619.14x = 854.43 × 444.81
  4. Step 4: Simplify right side
    619.14x = 380,059.01
  5. Step 5: Solve for x
    x = 380,059.01/619.14
  6. Step 6: Final answer
    x = 613.85

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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.