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Finding the Fourth Proportional to 383.00, 528.58 and 217.25

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Solution

The fourth proportional to 383.00, 528.58 and 217.25 is: 299.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.00 : 528.58 = 217.25 : x
  2. Step 2: Convert to fraction form
    383.00/528.58 = 217.25/x
  3. Step 3: Cross multiply
    383.00x = 528.58 × 217.25
  4. Step 4: Simplify right side
    383.00x = 114,832.39
  5. Step 5: Solve for x
    x = 114,832.39/383.00
  6. Step 6: Final answer
    x = 299.83

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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.