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Finding the Fourth Proportional to 583.99, 874.84 and 445.31

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Solution

The fourth proportional to 583.99, 874.84 and 445.31 is: 667.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.99 : 874.84 = 445.31 : x
  2. Step 2: Convert to fraction form
    583.99/874.84 = 445.31/x
  3. Step 3: Cross multiply
    583.99x = 874.84 × 445.31
  4. Step 4: Simplify right side
    583.99x = 389,575.00
  5. Step 5: Solve for x
    x = 389,575.00/583.99
  6. Step 6: Final answer
    x = 667.09

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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.