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Finding the Fourth Proportional to 443.83, 665.77 and 238.55

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Solution

The fourth proportional to 443.83, 665.77 and 238.55 is: 357.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.83 : 665.77 = 238.55 : x
  2. Step 2: Convert to fraction form
    443.83/665.77 = 238.55/x
  3. Step 3: Cross multiply
    443.83x = 665.77 × 238.55
  4. Step 4: Simplify right side
    443.83x = 158,815.96
  5. Step 5: Solve for x
    x = 158,815.96/443.83
  6. Step 6: Final answer
    x = 357.83

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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.