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Finding the Fourth Proportional to 1,603.26, 2,212.50 and 940.12

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Solution

The fourth proportional to 1,603.26, 2,212.50 and 940.12 is: 1,297.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.26 : 2,212.50 = 940.12 : x
  2. Step 2: Convert to fraction form
    1,603.26/2,212.50 = 940.12/x
  3. Step 3: Cross multiply
    1,603.26x = 2,212.50 × 940.12
  4. Step 4: Simplify right side
    1,603.26x = 2,080,015.08
  5. Step 5: Solve for x
    x = 2,080,015.08/1,603.26
  6. Step 6: Final answer
    x = 1,297.37

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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.