Finding the Fourth Proportional to 262.31, 393.60 and 154.31
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Solution
The fourth proportional to 262.31, 393.60 and 154.31 is: 231.54
Step by Step Solution
- Step 1: Write the proportion equation
262.31 : 393.60 = 154.31 : x - Step 2: Convert to fraction form
262.31/393.60 = 154.31/x - Step 3: Cross multiply
262.31x = 393.60 × 154.31 - Step 4: Simplify right side
262.31x = 60,736.42 - Step 5: Solve for x
x = 60,736.42/262.31 - Step 6: Final answer
x = 231.54
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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.