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Finding the Fourth Proportional to 1,073.67, 1,481.99 and 654.40

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Solution

The fourth proportional to 1,073.67, 1,481.99 and 654.40 is: 903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073.67 : 1,481.99 = 654.40 : x
  2. Step 2: Convert to fraction form
    1,073.67/1,481.99 = 654.40/x
  3. Step 3: Cross multiply
    1,073.67x = 1,481.99 × 654.40
  4. Step 4: Simplify right side
    1,073.67x = 969,814.26
  5. Step 5: Solve for x
    x = 969,814.26/1,073.67
  6. Step 6: Final answer
    x = 903.27

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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.