Finding the Fourth Proportional to 157.87, 236.49 and 125.43
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Solution
The fourth proportional to 157.87, 236.49 and 125.43 is: 187.88
Step by Step Solution
- Step 1: Write the proportion equation
157.87 : 236.49 = 125.43 : x - Step 2: Convert to fraction form
157.87/236.49 = 125.43/x - Step 3: Cross multiply
157.87x = 236.49 × 125.43 - Step 4: Simplify right side
157.87x = 29,661.13 - Step 5: Solve for x
x = 29,661.13/157.87 - Step 6: Final answer
x = 187.88
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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.