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Finding the Fourth Proportional to 1,083.73, 1,495.44 and 641.47

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Solution

The fourth proportional to 1,083.73, 1,495.44 and 641.47 is: 885.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.73 : 1,495.44 = 641.47 : x
  2. Step 2: Convert to fraction form
    1,083.73/1,495.44 = 641.47/x
  3. Step 3: Cross multiply
    1,083.73x = 1,495.44 × 641.47
  4. Step 4: Simplify right side
    1,083.73x = 959,277.16
  5. Step 5: Solve for x
    x = 959,277.16/1,083.73
  6. Step 6: Final answer
    x = 885.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.