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Finding the Fourth Proportional to 446.96, 619.28 and 439.94

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Solution

The fourth proportional to 446.96, 619.28 and 439.94 is: 609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.96 : 619.28 = 439.94 : x
  2. Step 2: Convert to fraction form
    446.96/619.28 = 439.94/x
  3. Step 3: Cross multiply
    446.96x = 619.28 × 439.94
  4. Step 4: Simplify right side
    446.96x = 272,446.04
  5. Step 5: Solve for x
    x = 272,446.04/446.96
  6. Step 6: Final answer
    x = 609.55

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.