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Finding the Fourth Proportional to 383.58, 528.03 and 325.26

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Solution

The fourth proportional to 383.58, 528.03 and 325.26 is: 447.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.58 : 528.03 = 325.26 : x
  2. Step 2: Convert to fraction form
    383.58/528.03 = 325.26/x
  3. Step 3: Cross multiply
    383.58x = 528.03 × 325.26
  4. Step 4: Simplify right side
    383.58x = 171,747.04
  5. Step 5: Solve for x
    x = 171,747.04/383.58
  6. Step 6: Final answer
    x = 447.75

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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.