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Finding the Fourth Proportional to 339.39, 505.49 and 335.34

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Solution

The fourth proportional to 339.39, 505.49 and 335.34 is: 499.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.39 : 505.49 = 335.34 : x
  2. Step 2: Convert to fraction form
    339.39/505.49 = 335.34/x
  3. Step 3: Cross multiply
    339.39x = 505.49 × 335.34
  4. Step 4: Simplify right side
    339.39x = 169,511.23
  5. Step 5: Solve for x
    x = 169,511.23/339.39
  6. Step 6: Final answer
    x = 499.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.