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Finding the Fourth Proportional to 625, 862.50 and 349

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Solution

The fourth proportional to 625, 862.50 and 349 is: 481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    625 : 862.50 = 349 : x
  2. Step 2: Convert to fraction form
    625/862.50 = 349/x
  3. Step 3: Cross multiply
    625x = 862.50 × 349
  4. Step 4: Simplify right side
    625x = 301,012.50
  5. Step 5: Solve for x
    x = 301,012.50/625
  6. Step 6: Final answer
    x = 481.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.