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Finding the Fourth Proportional to 727.83, 1,091.78 and 240.88

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Solution

The fourth proportional to 727.83, 1,091.78 and 240.88 is: 361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.83 : 1,091.78 = 240.88 : x
  2. Step 2: Convert to fraction form
    727.83/1,091.78 = 240.88/x
  3. Step 3: Cross multiply
    727.83x = 1,091.78 × 240.88
  4. Step 4: Simplify right side
    727.83x = 262,987.97
  5. Step 5: Solve for x
    x = 262,987.97/727.83
  6. Step 6: Final answer
    x = 361.33

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