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Finding the Fourth Proportional to 1,036.82, 1,554.62 and 451.40

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Solution

The fourth proportional to 1,036.82, 1,554.62 and 451.40 is: 676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.82 : 1,554.62 = 451.40 : x
  2. Step 2: Convert to fraction form
    1,036.82/1,554.62 = 451.40/x
  3. Step 3: Cross multiply
    1,036.82x = 1,554.62 × 451.40
  4. Step 4: Simplify right side
    1,036.82x = 701,745.44
  5. Step 5: Solve for x
    x = 701,745.44/1,036.82
  6. Step 6: Final answer
    x = 676.82

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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.