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Finding the Fourth Proportional to 383.34, 528.97 and 217.54

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Solution

The fourth proportional to 383.34, 528.97 and 217.54 is: 300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.34 : 528.97 = 217.54 : x
  2. Step 2: Convert to fraction form
    383.34/528.97 = 217.54/x
  3. Step 3: Cross multiply
    383.34x = 528.97 × 217.54
  4. Step 4: Simplify right side
    383.34x = 115,072.13
  5. Step 5: Solve for x
    x = 115,072.13/383.34
  6. Step 6: Final answer
    x = 300.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.