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Finding the Fourth Proportional to 1,293.77, 1,940.38 and 416.35

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Solution

The fourth proportional to 1,293.77, 1,940.38 and 416.35 is: 624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.77 : 1,940.38 = 416.35 : x
  2. Step 2: Convert to fraction form
    1,293.77/1,940.38 = 416.35/x
  3. Step 3: Cross multiply
    1,293.77x = 1,940.38 × 416.35
  4. Step 4: Simplify right side
    1,293.77x = 807,879.72
  5. Step 5: Solve for x
    x = 807,879.72/1,293.77
  6. Step 6: Final answer
    x = 624.44

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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.