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Finding the Fourth Proportional to 1,133.97, 1,692.34 and 1,104.81

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Solution

The fourth proportional to 1,133.97, 1,692.34 and 1,104.81 is: 1,648.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.97 : 1,692.34 = 1,104.81 : x
  2. Step 2: Convert to fraction form
    1,133.97/1,692.34 = 1,104.81/x
  3. Step 3: Cross multiply
    1,133.97x = 1,692.34 × 1,104.81
  4. Step 4: Simplify right side
    1,133.97x = 1,869,711.39
  5. Step 5: Solve for x
    x = 1,869,711.39/1,133.97
  6. Step 6: Final answer
    x = 1,648.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.