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Finding the Fourth Proportional to 1,272.82, 1,756.39 and 941.46

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Solution

The fourth proportional to 1,272.82, 1,756.39 and 941.46 is: 1,299.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.82 : 1,756.39 = 941.46 : x
  2. Step 2: Convert to fraction form
    1,272.82/1,756.39 = 941.46/x
  3. Step 3: Cross multiply
    1,272.82x = 1,756.39 × 941.46
  4. Step 4: Simplify right side
    1,272.82x = 1,653,570.93
  5. Step 5: Solve for x
    x = 1,653,570.93/1,272.82
  6. Step 6: Final answer
    x = 1,299.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.