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Finding the Fourth Proportional to 1,044.27, 1,441.10 and 645.99

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Solution

The fourth proportional to 1,044.27, 1,441.10 and 645.99 is: 891.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.27 : 1,441.10 = 645.99 : x
  2. Step 2: Convert to fraction form
    1,044.27/1,441.10 = 645.99/x
  3. Step 3: Cross multiply
    1,044.27x = 1,441.10 × 645.99
  4. Step 4: Simplify right side
    1,044.27x = 930,935.33
  5. Step 5: Solve for x
    x = 930,935.33/1,044.27
  6. Step 6: Final answer
    x = 891.47

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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.