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Finding the Fourth Proportional to 694.33, 1,041.91 and 255.89

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Solution

The fourth proportional to 694.33, 1,041.91 and 255.89 is: 383.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.33 : 1,041.91 = 255.89 : x
  2. Step 2: Convert to fraction form
    694.33/1,041.91 = 255.89/x
  3. Step 3: Cross multiply
    694.33x = 1,041.91 × 255.89
  4. Step 4: Simplify right side
    694.33x = 266,616.31
  5. Step 5: Solve for x
    x = 266,616.31/694.33
  6. Step 6: Final answer
    x = 383.99

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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.