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Finding the Fourth Proportional to 1,306.63, 1,804.31 and 888.54

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Solution

The fourth proportional to 1,306.63, 1,804.31 and 888.54 is: 1,226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.63 : 1,804.31 = 888.54 : x
  2. Step 2: Convert to fraction form
    1,306.63/1,804.31 = 888.54/x
  3. Step 3: Cross multiply
    1,306.63x = 1,804.31 × 888.54
  4. Step 4: Simplify right side
    1,306.63x = 1,603,193.73
  5. Step 5: Solve for x
    x = 1,603,193.73/1,306.63
  6. Step 6: Final answer
    x = 1,226.97

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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.