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Finding the Fourth Proportional to 2,261.81, 3,392.73 and 618.53

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Solution

The fourth proportional to 2,261.81, 3,392.73 and 618.53 is: 927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.81 : 3,392.73 = 618.53 : x
  2. Step 2: Convert to fraction form
    2,261.81/3,392.73 = 618.53/x
  3. Step 3: Cross multiply
    2,261.81x = 3,392.73 × 618.53
  4. Step 4: Simplify right side
    2,261.81x = 2,098,505.29
  5. Step 5: Solve for x
    x = 2,098,505.29/2,261.81
  6. Step 6: Final answer
    x = 927.80

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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.