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Finding the Fourth Proportional to 1,363.67, 2,044.14 and 438.55

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Solution

The fourth proportional to 1,363.67, 2,044.14 and 438.55 is: 657.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.67 : 2,044.14 = 438.55 : x
  2. Step 2: Convert to fraction form
    1,363.67/2,044.14 = 438.55/x
  3. Step 3: Cross multiply
    1,363.67x = 2,044.14 × 438.55
  4. Step 4: Simplify right side
    1,363.67x = 896,450.84
  5. Step 5: Solve for x
    x = 896,450.84/1,363.67
  6. Step 6: Final answer
    x = 657.38

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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.