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Finding the Fourth Proportional to 2,243.73, 3,365.59 and 782.54

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Solution

The fourth proportional to 2,243.73, 3,365.59 and 782.54 is: 1,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,243.73 : 3,365.59 = 782.54 : x
  2. Step 2: Convert to fraction form
    2,243.73/3,365.59 = 782.54/x
  3. Step 3: Cross multiply
    2,243.73x = 3,365.59 × 782.54
  4. Step 4: Simplify right side
    2,243.73x = 2,633,693.54
  5. Step 5: Solve for x
    x = 2,633,693.54/2,243.73
  6. Step 6: Final answer
    x = 1,173.80

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Why These Related Problems?

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