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Finding the Fourth Proportional to 1,267.94, 1,743.05 and 1,090.25

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Solution

The fourth proportional to 1,267.94, 1,743.05 and 1,090.25 is: 1,498.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.94 : 1,743.05 = 1,090.25 : x
  2. Step 2: Convert to fraction form
    1,267.94/1,743.05 = 1,090.25/x
  3. Step 3: Cross multiply
    1,267.94x = 1,743.05 × 1,090.25
  4. Step 4: Simplify right side
    1,267.94x = 1,900,361.35
  5. Step 5: Solve for x
    x = 1,900,361.35/1,267.94
  6. Step 6: Final answer
    x = 1,498.77

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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.