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Finding the Fourth Proportional to 1,233.96, 1,843.70 and 1,190.89

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Solution

The fourth proportional to 1,233.96, 1,843.70 and 1,190.89 is: 1,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.96 : 1,843.70 = 1,190.89 : x
  2. Step 2: Convert to fraction form
    1,233.96/1,843.70 = 1,190.89/x
  3. Step 3: Cross multiply
    1,233.96x = 1,843.70 × 1,190.89
  4. Step 4: Simplify right side
    1,233.96x = 2,195,643.89
  5. Step 5: Solve for x
    x = 2,195,643.89/1,233.96
  6. Step 6: Final answer
    x = 1,779.35

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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.