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Finding the Fourth Proportional to 443.34, 665.26 and 238.12

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Solution

The fourth proportional to 443.34, 665.26 and 238.12 is: 357.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.34 : 665.26 = 238.12 : x
  2. Step 2: Convert to fraction form
    443.34/665.26 = 238.12/x
  3. Step 3: Cross multiply
    443.34x = 665.26 × 238.12
  4. Step 4: Simplify right side
    443.34x = 158,409.45
  5. Step 5: Solve for x
    x = 158,409.45/443.34
  6. Step 6: Final answer
    x = 357.31

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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.