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Finding the Fourth Proportional to 1,293.45, 1,940.48 and 369.02

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Solution

The fourth proportional to 1,293.45, 1,940.48 and 369.02 is: 553.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.45 : 1,940.48 = 369.02 : x
  2. Step 2: Convert to fraction form
    1,293.45/1,940.48 = 369.02/x
  3. Step 3: Cross multiply
    1,293.45x = 1,940.48 × 369.02
  4. Step 4: Simplify right side
    1,293.45x = 716,064.38
  5. Step 5: Solve for x
    x = 716,064.38/1,293.45
  6. Step 6: Final answer
    x = 553.61

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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.