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Finding the Fourth Proportional to 439.62, 605.48 and 346.22

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Solution

The fourth proportional to 439.62, 605.48 and 346.22 is: 476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.62 : 605.48 = 346.22 : x
  2. Step 2: Convert to fraction form
    439.62/605.48 = 346.22/x
  3. Step 3: Cross multiply
    439.62x = 605.48 × 346.22
  4. Step 4: Simplify right side
    439.62x = 209,624.53
  5. Step 5: Solve for x
    x = 209,624.53/439.62
  6. Step 6: Final answer
    x = 476.83

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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.