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Finding the Fourth Proportional to 443.70, 665.78 and 183.83

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Solution

The fourth proportional to 443.70, 665.78 and 183.83 is: 275.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.70 : 665.78 = 183.83 : x
  2. Step 2: Convert to fraction form
    443.70/665.78 = 183.83/x
  3. Step 3: Cross multiply
    443.70x = 665.78 × 183.83
  4. Step 4: Simplify right side
    443.70x = 122,386.09
  5. Step 5: Solve for x
    x = 122,386.09/443.70
  6. Step 6: Final answer
    x = 275.83

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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.