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Finding the Fourth Proportional to 559.35, 837.77 and 449.28

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Solution

The fourth proportional to 559.35, 837.77 and 449.28 is: 672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.35 : 837.77 = 449.28 : x
  2. Step 2: Convert to fraction form
    559.35/837.77 = 449.28/x
  3. Step 3: Cross multiply
    559.35x = 837.77 × 449.28
  4. Step 4: Simplify right side
    559.35x = 376,391.06
  5. Step 5: Solve for x
    x = 376,391.06/559.35
  6. Step 6: Final answer
    x = 672.91

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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.