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Finding the Fourth Proportional to 482.22, 664.20 and 383.40

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Solution

The fourth proportional to 482.22, 664.20 and 383.40 is: 528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.22 : 664.20 = 383.40 : x
  2. Step 2: Convert to fraction form
    482.22/664.20 = 383.40/x
  3. Step 3: Cross multiply
    482.22x = 664.20 × 383.40
  4. Step 4: Simplify right side
    482.22x = 254,654.28
  5. Step 5: Solve for x
    x = 254,654.28/482.22
  6. Step 6: Final answer
    x = 528.09

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