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Finding the Fourth Proportional to 1,293.68, 1,940.60 and 369.30

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Solution

The fourth proportional to 1,293.68, 1,940.60 and 369.30 is: 553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.68 : 1,940.60 = 369.30 : x
  2. Step 2: Convert to fraction form
    1,293.68/1,940.60 = 369.30/x
  3. Step 3: Cross multiply
    1,293.68x = 1,940.60 × 369.30
  4. Step 4: Simplify right side
    1,293.68x = 716,661.73
  5. Step 5: Solve for x
    x = 716,661.73/1,293.68
  6. Step 6: Final answer
    x = 553.97

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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.