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Finding the Fourth Proportional to 481.70, 665.43 and 383.33

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Solution

The fourth proportional to 481.70, 665.43 and 383.33 is: 529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.70 : 665.43 = 383.33 : x
  2. Step 2: Convert to fraction form
    481.70/665.43 = 383.33/x
  3. Step 3: Cross multiply
    481.70x = 665.43 × 383.33
  4. Step 4: Simplify right side
    481.70x = 255,079.39
  5. Step 5: Solve for x
    x = 255,079.39/481.70
  6. Step 6: Final answer
    x = 529.54

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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.