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Finding the Fourth Proportional to 443.84, 665.69 and 282.65

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Solution

The fourth proportional to 443.84, 665.69 and 282.65 is: 423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.84 : 665.69 = 282.65 : x
  2. Step 2: Convert to fraction form
    443.84/665.69 = 282.65/x
  3. Step 3: Cross multiply
    443.84x = 665.69 × 282.65
  4. Step 4: Simplify right side
    443.84x = 188,152.54
  5. Step 5: Solve for x
    x = 188,152.54/443.84
  6. Step 6: Final answer
    x = 423.92

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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.