Finding the Fourth Proportional to 157.88, 236.97 and 117.18
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Solution
The fourth proportional to 157.88, 236.97 and 117.18 is: 175.88
Step by Step Solution
- Step 1: Write the proportion equation
157.88 : 236.97 = 117.18 : x - Step 2: Convert to fraction form
157.88/236.97 = 117.18/x - Step 3: Cross multiply
157.88x = 236.97 × 117.18 - Step 4: Simplify right side
157.88x = 27,768.14 - Step 5: Solve for x
x = 27,768.14/157.88 - Step 6: Final answer
x = 175.88
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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.