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Finding the Fourth Proportional to 265.37, 365.38 and 218.59

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Solution

The fourth proportional to 265.37, 365.38 and 218.59 is: 300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.37 : 365.38 = 218.59 : x
  2. Step 2: Convert to fraction form
    265.37/365.38 = 218.59/x
  3. Step 3: Cross multiply
    265.37x = 365.38 × 218.59
  4. Step 4: Simplify right side
    265.37x = 79,866.95
  5. Step 5: Solve for x
    x = 79,866.95/265.37
  6. Step 6: Final answer
    x = 300.97

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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.