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Finding the Fourth Proportional to 383.82, 529.89 and 273.51

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Solution

The fourth proportional to 383.82, 529.89 and 273.51 is: 377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.82 : 529.89 = 273.51 : x
  2. Step 2: Convert to fraction form
    383.82/529.89 = 273.51/x
  3. Step 3: Cross multiply
    383.82x = 529.89 × 273.51
  4. Step 4: Simplify right side
    383.82x = 144,930.21
  5. Step 5: Solve for x
    x = 144,930.21/383.82
  6. Step 6: Final answer
    x = 377.60

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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.