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Finding the Fourth Proportional to 339.90, 465.61 and 338.94

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Solution

The fourth proportional to 339.90, 465.61 and 338.94 is: 464.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.90 : 465.61 = 338.94 : x
  2. Step 2: Convert to fraction form
    339.90/465.61 = 338.94/x
  3. Step 3: Cross multiply
    339.90x = 465.61 × 338.94
  4. Step 4: Simplify right side
    339.90x = 157,813.85
  5. Step 5: Solve for x
    x = 157,813.85/339.90
  6. Step 6: Final answer
    x = 464.29

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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.