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Finding the Fourth Proportional to 439.05, 606.14 and 346.11

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Solution

The fourth proportional to 439.05, 606.14 and 346.11 is: 477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.05 : 606.14 = 346.11 : x
  2. Step 2: Convert to fraction form
    439.05/606.14 = 346.11/x
  3. Step 3: Cross multiply
    439.05x = 606.14 × 346.11
  4. Step 4: Simplify right side
    439.05x = 209,791.12
  5. Step 5: Solve for x
    x = 209,791.12/439.05
  6. Step 6: Final answer
    x = 477.83

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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.