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Finding the Fourth Proportional to 664.03, 995.36 and 355.80

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Solution

The fourth proportional to 664.03, 995.36 and 355.80 is: 533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.03 : 995.36 = 355.80 : x
  2. Step 2: Convert to fraction form
    664.03/995.36 = 355.80/x
  3. Step 3: Cross multiply
    664.03x = 995.36 × 355.80
  4. Step 4: Simplify right side
    664.03x = 354,146.44
  5. Step 5: Solve for x
    x = 354,146.44/664.03
  6. Step 6: Final answer
    x = 533.33

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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.