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Finding the Fourth Proportional to 1,044.23, 1,440.59 and 671.42

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Solution

The fourth proportional to 1,044.23, 1,440.59 and 671.42 is: 926.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.23 : 1,440.59 = 671.42 : x
  2. Step 2: Convert to fraction form
    1,044.23/1,440.59 = 671.42/x
  3. Step 3: Cross multiply
    1,044.23x = 1,440.59 × 671.42
  4. Step 4: Simplify right side
    1,044.23x = 967,241.18
  5. Step 5: Solve for x
    x = 967,241.18/1,044.23
  6. Step 6: Final answer
    x = 926.28

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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.