Finding the Fourth Proportional to 157.28, 216.97 and 108.08
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Solution
The fourth proportional to 157.28, 216.97 and 108.08 is: 149.10
Step by Step Solution
- Step 1: Write the proportion equation
157.28 : 216.97 = 108.08 : x - Step 2: Convert to fraction form
157.28/216.97 = 108.08/x - Step 3: Cross multiply
157.28x = 216.97 × 108.08 - Step 4: Simplify right side
157.28x = 23,450.12 - Step 5: Solve for x
x = 23,450.12/157.28 - Step 6: Final answer
x = 149.10
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.