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Finding the Fourth Proportional to 347.34, 517.82 and 319.94

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Solution

The fourth proportional to 347.34, 517.82 and 319.94 is: 476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.34 : 517.82 = 319.94 : x
  2. Step 2: Convert to fraction form
    347.34/517.82 = 319.94/x
  3. Step 3: Cross multiply
    347.34x = 517.82 × 319.94
  4. Step 4: Simplify right side
    347.34x = 165,669.54
  5. Step 5: Solve for x
    x = 165,669.54/347.34
  6. Step 6: Final answer
    x = 476.97

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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.