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Finding the Fourth Proportional to 383.03, 573.48 and 328.20

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Solution

The fourth proportional to 383.03, 573.48 and 328.20 is: 491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.03 : 573.48 = 328.20 : x
  2. Step 2: Convert to fraction form
    383.03/573.48 = 328.20/x
  3. Step 3: Cross multiply
    383.03x = 573.48 × 328.20
  4. Step 4: Simplify right side
    383.03x = 188,217.21
  5. Step 5: Solve for x
    x = 188,217.21/383.03
  6. Step 6: Final answer
    x = 491.39

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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.