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Finding the Fourth Proportional to 1,361.94, 2,043.48 and 923.69

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Solution

The fourth proportional to 1,361.94, 2,043.48 and 923.69 is: 1,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.94 : 2,043.48 = 923.69 : x
  2. Step 2: Convert to fraction form
    1,361.94/2,043.48 = 923.69/x
  3. Step 3: Cross multiply
    1,361.94x = 2,043.48 × 923.69
  4. Step 4: Simplify right side
    1,361.94x = 1,887,531.82
  5. Step 5: Solve for x
    x = 1,887,531.82/1,361.94
  6. Step 6: Final answer
    x = 1,385.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.