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Finding the Fourth Proportional to 1,333.97, 1,840.88 and 744.64

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Solution

The fourth proportional to 1,333.97, 1,840.88 and 744.64 is: 1,027.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.97 : 1,840.88 = 744.64 : x
  2. Step 2: Convert to fraction form
    1,333.97/1,840.88 = 744.64/x
  3. Step 3: Cross multiply
    1,333.97x = 1,840.88 × 744.64
  4. Step 4: Simplify right side
    1,333.97x = 1,370,796.31
  5. Step 5: Solve for x
    x = 1,370,796.31/1,333.97
  6. Step 6: Final answer
    x = 1,027.61

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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.