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Finding the Fourth Proportional to 637.80, 956.38 and 349

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Solution

The fourth proportional to 637.80, 956.38 and 349 is: 523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.80 : 956.38 = 349 : x
  2. Step 2: Convert to fraction form
    637.80/956.38 = 349/x
  3. Step 3: Cross multiply
    637.80x = 956.38 × 349
  4. Step 4: Simplify right side
    637.80x = 333,776.62
  5. Step 5: Solve for x
    x = 333,776.62/637.80
  6. Step 6: Final answer
    x = 523.32

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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.