Finding the Fourth Proportional to 129.40, 193.17 and 110.92
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Solution
The fourth proportional to 129.40, 193.17 and 110.92 is: 165.59
Step by Step Solution
- Step 1: Write the proportion equation
129.40 : 193.17 = 110.92 : x - Step 2: Convert to fraction form
129.40/193.17 = 110.92/x - Step 3: Cross multiply
129.40x = 193.17 × 110.92 - Step 4: Simplify right side
129.40x = 21,427.18 - Step 5: Solve for x
x = 21,427.18/129.40 - Step 6: Final answer
x = 165.59
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.