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Finding the Fourth Proportional to 941.36, 1,290.98 and 901.94

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Solution

The fourth proportional to 941.36, 1,290.98 and 901.94 is: 1,236.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.36 : 1,290.98 = 901.94 : x
  2. Step 2: Convert to fraction form
    941.36/1,290.98 = 901.94/x
  3. Step 3: Cross multiply
    941.36x = 1,290.98 × 901.94
  4. Step 4: Simplify right side
    941.36x = 1,164,375.54
  5. Step 5: Solve for x
    x = 1,164,375.54/941.36
  6. Step 6: Final answer
    x = 1,236.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.