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Finding the Fourth Proportional to 243.37, 365.15 and 135.23

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Solution

The fourth proportional to 243.37, 365.15 and 135.23 is: 202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.37 : 365.15 = 135.23 : x
  2. Step 2: Convert to fraction form
    243.37/365.15 = 135.23/x
  3. Step 3: Cross multiply
    243.37x = 365.15 × 135.23
  4. Step 4: Simplify right side
    243.37x = 49,379.23
  5. Step 5: Solve for x
    x = 49,379.23/243.37
  6. Step 6: Final answer
    x = 202.90

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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.