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Finding the Fourth Proportional to 1,362.88, 2,044.05 and 438.21

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Solution

The fourth proportional to 1,362.88, 2,044.05 and 438.21 is: 657.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.88 : 2,044.05 = 438.21 : x
  2. Step 2: Convert to fraction form
    1,362.88/2,044.05 = 438.21/x
  3. Step 3: Cross multiply
    1,362.88x = 2,044.05 × 438.21
  4. Step 4: Simplify right side
    1,362.88x = 895,723.97
  5. Step 5: Solve for x
    x = 895,723.97/1,362.88
  6. Step 6: Final answer
    x = 657.23

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1.5x scale

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.