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Finding the Fourth Proportional to 1,562.98, 2,344.47 and 408.73

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Solution

The fourth proportional to 1,562.98, 2,344.47 and 408.73 is: 613.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.98 : 2,344.47 = 408.73 : x
  2. Step 2: Convert to fraction form
    1,562.98/2,344.47 = 408.73/x
  3. Step 3: Cross multiply
    1,562.98x = 2,344.47 × 408.73
  4. Step 4: Simplify right side
    1,562.98x = 958,252.23
  5. Step 5: Solve for x
    x = 958,252.23/1,562.98
  6. Step 6: Final answer
    x = 613.09

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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.