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Finding the Fourth Proportional to 1,549.73, 2,137.93 and 920.29

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Solution

The fourth proportional to 1,549.73, 2,137.93 and 920.29 is: 1,269.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.73 : 2,137.93 = 920.29 : x
  2. Step 2: Convert to fraction form
    1,549.73/2,137.93 = 920.29/x
  3. Step 3: Cross multiply
    1,549.73x = 2,137.93 × 920.29
  4. Step 4: Simplify right side
    1,549.73x = 1,967,504.91
  5. Step 5: Solve for x
    x = 1,967,504.91/1,549.73
  6. Step 6: Final answer
    x = 1,269.58

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Why These Related Problems?

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