Finding the Fourth Proportional to 157.68, 236.25 and 122.58
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Solution
The fourth proportional to 157.68, 236.25 and 122.58 is: 183.66
Step by Step Solution
- Step 1: Write the proportion equation
157.68 : 236.25 = 122.58 : x - Step 2: Convert to fraction form
157.68/236.25 = 122.58/x - Step 3: Cross multiply
157.68x = 236.25 × 122.58 - Step 4: Simplify right side
157.68x = 28,959.53 - Step 5: Solve for x
x = 28,959.53/157.68 - Step 6: Final answer
x = 183.66
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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.