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Finding the Fourth Proportional to 339.65, 506.09 and 303.30

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Solution

The fourth proportional to 339.65, 506.09 and 303.30 is: 451.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.65 : 506.09 = 303.30 : x
  2. Step 2: Convert to fraction form
    339.65/506.09 = 303.30/x
  3. Step 3: Cross multiply
    339.65x = 506.09 × 303.30
  4. Step 4: Simplify right side
    339.65x = 153,497.10
  5. Step 5: Solve for x
    x = 153,497.10/339.65
  6. Step 6: Final answer
    x = 451.93

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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.