Finding the Fourth Proportional to 157.44, 236.08 and 49.20
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Solution
The fourth proportional to 157.44, 236.08 and 49.20 is: 73.78
Step by Step Solution
- Step 1: Write the proportion equation
157.44 : 236.08 = 49.20 : x - Step 2: Convert to fraction form
157.44/236.08 = 49.20/x - Step 3: Cross multiply
157.44x = 236.08 × 49.20 - Step 4: Simplify right side
157.44x = 11,615.14 - Step 5: Solve for x
x = 11,615.14/157.44 - Step 6: Final answer
x = 73.78
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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.