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Finding the Fourth Proportional to 339.72, 506.96 and 303.26

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Solution

The fourth proportional to 339.72, 506.96 and 303.26 is: 452.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.72 : 506.96 = 303.26 : x
  2. Step 2: Convert to fraction form
    339.72/506.96 = 303.26/x
  3. Step 3: Cross multiply
    339.72x = 506.96 × 303.26
  4. Step 4: Simplify right side
    339.72x = 153,740.69
  5. Step 5: Solve for x
    x = 153,740.69/339.72
  6. Step 6: Final answer
    x = 452.55

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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.