Finding the Fourth Proportional to 157.89, 236.99 and 97.14
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Solution
The fourth proportional to 157.89, 236.99 and 97.14 is: 145.81
Step by Step Solution
- Step 1: Write the proportion equation
157.89 : 236.99 = 97.14 : x - Step 2: Convert to fraction form
157.89/236.99 = 97.14/x - Step 3: Cross multiply
157.89x = 236.99 × 97.14 - Step 4: Simplify right side
157.89x = 23,021.21 - Step 5: Solve for x
x = 23,021.21/157.89 - Step 6: Final answer
x = 145.81
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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.