Finding the Fourth Proportional to 129.79, 194.36 and 110.42
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Solution
The fourth proportional to 129.79, 194.36 and 110.42 is: 165.35
Step by Step Solution
- Step 1: Write the proportion equation
129.79 : 194.36 = 110.42 : x - Step 2: Convert to fraction form
129.79/194.36 = 110.42/x - Step 3: Cross multiply
129.79x = 194.36 × 110.42 - Step 4: Simplify right side
129.79x = 21,460.26 - Step 5: Solve for x
x = 21,460.26/129.79 - Step 6: Final answer
x = 165.35
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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.