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Finding the Fourth Proportional to 446.06, 615.09 and 439.22

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Solution

The fourth proportional to 446.06, 615.09 and 439.22 is: 605.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.06 : 615.09 = 439.22 : x
  2. Step 2: Convert to fraction form
    446.06/615.09 = 439.22/x
  3. Step 3: Cross multiply
    446.06x = 615.09 × 439.22
  4. Step 4: Simplify right side
    446.06x = 270,163.01
  5. Step 5: Solve for x
    x = 270,163.01/446.06
  6. Step 6: Final answer
    x = 605.67

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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.