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Finding the Fourth Proportional to 339.02, 505.50 and 338.57

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Solution

The fourth proportional to 339.02, 505.50 and 338.57 is: 504.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.02 : 505.50 = 338.57 : x
  2. Step 2: Convert to fraction form
    339.02/505.50 = 338.57/x
  3. Step 3: Cross multiply
    339.02x = 505.50 × 338.57
  4. Step 4: Simplify right side
    339.02x = 171,147.14
  5. Step 5: Solve for x
    x = 171,147.14/339.02
  6. Step 6: Final answer
    x = 504.83

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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.