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Finding the Fourth Proportional to 843.94, 1,266.56 and 585.75

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Solution

The fourth proportional to 843.94, 1,266.56 and 585.75 is: 879.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.94 : 1,266.56 = 585.75 : x
  2. Step 2: Convert to fraction form
    843.94/1,266.56 = 585.75/x
  3. Step 3: Cross multiply
    843.94x = 1,266.56 × 585.75
  4. Step 4: Simplify right side
    843.94x = 741,886.79
  5. Step 5: Solve for x
    x = 741,886.79/843.94
  6. Step 6: Final answer
    x = 879.08

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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.