Finding the Fourth Proportional to 218.14, 327.15 and 157.09
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Solution
The fourth proportional to 218.14, 327.15 and 157.09 is: 235.59
Step by Step Solution
- Step 1: Write the proportion equation
218.14 : 327.15 = 157.09 : x - Step 2: Convert to fraction form
218.14/327.15 = 157.09/x - Step 3: Cross multiply
218.14x = 327.15 × 157.09 - Step 4: Simplify right side
218.14x = 51,391.99 - Step 5: Solve for x
x = 51,391.99/218.14 - Step 6: Final answer
x = 235.59
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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.