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Finding the Fourth Proportional to 1,193.56, 1,790.94 and 808

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Solution

The fourth proportional to 1,193.56, 1,790.94 and 808 is: 1,212.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.56 : 1,790.94 = 808 : x
  2. Step 2: Convert to fraction form
    1,193.56/1,790.94 = 808/x
  3. Step 3: Cross multiply
    1,193.56x = 1,790.94 × 808
  4. Step 4: Simplify right side
    1,193.56x = 1,447,079.52
  5. Step 5: Solve for x
    x = 1,447,079.52/1,193.56
  6. Step 6: Final answer
    x = 1,212.41

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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.