Finding the Fourth Proportional to 157.16, 216.99 and 120.26
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Solution
The fourth proportional to 157.16, 216.99 and 120.26 is: 166.03
Step by Step Solution
- Step 1: Write the proportion equation
157.16 : 216.99 = 120.26 : x - Step 2: Convert to fraction form
157.16/216.99 = 120.26/x - Step 3: Cross multiply
157.16x = 216.99 × 120.26 - Step 4: Simplify right side
157.16x = 26,094.13 - Step 5: Solve for x
x = 26,094.13/157.16 - Step 6: Final answer
x = 166.03
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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.