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Finding the Fourth Proportional to 844.51, 1,266.73 and 259.48

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Solution

The fourth proportional to 844.51, 1,266.73 and 259.48 is: 389.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.51 : 1,266.73 = 259.48 : x
  2. Step 2: Convert to fraction form
    844.51/1,266.73 = 259.48/x
  3. Step 3: Cross multiply
    844.51x = 1,266.73 × 259.48
  4. Step 4: Simplify right side
    844.51x = 328,687.28
  5. Step 5: Solve for x
    x = 328,687.28/844.51
  6. Step 6: Final answer
    x = 389.21

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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.