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Finding the Fourth Proportional to 342.34, 513.51 and 239.82

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Solution

The fourth proportional to 342.34, 513.51 and 239.82 is: 359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.34 : 513.51 = 239.82 : x
  2. Step 2: Convert to fraction form
    342.34/513.51 = 239.82/x
  3. Step 3: Cross multiply
    342.34x = 513.51 × 239.82
  4. Step 4: Simplify right side
    342.34x = 123,149.97
  5. Step 5: Solve for x
    x = 123,149.97/342.34
  6. Step 6: Final answer
    x = 359.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.