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Finding the Fourth Proportional to 1,368.26, 2,052.31 and 443.74

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Solution

The fourth proportional to 1,368.26, 2,052.31 and 443.74 is: 665.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.26 : 2,052.31 = 443.74 : x
  2. Step 2: Convert to fraction form
    1,368.26/2,052.31 = 443.74/x
  3. Step 3: Cross multiply
    1,368.26x = 2,052.31 × 443.74
  4. Step 4: Simplify right side
    1,368.26x = 910,692.04
  5. Step 5: Solve for x
    x = 910,692.04/1,368.26
  6. Step 6: Final answer
    x = 665.58

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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.