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Finding the Fourth Proportional to 350.40, 479.96 and 349.44

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Solution

The fourth proportional to 350.40, 479.96 and 349.44 is: 478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.40 : 479.96 = 349.44 : x
  2. Step 2: Convert to fraction form
    350.40/479.96 = 349.44/x
  3. Step 3: Cross multiply
    350.40x = 479.96 × 349.44
  4. Step 4: Simplify right side
    350.40x = 167,717.22
  5. Step 5: Solve for x
    x = 167,717.22/350.40
  6. Step 6: Final answer
    x = 478.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.