Finding the Fourth Proportional to 129.07, 193.73 and 115.34
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Solution
The fourth proportional to 129.07, 193.73 and 115.34 is: 173.11
Step by Step Solution
- Step 1: Write the proportion equation
129.07 : 193.73 = 115.34 : x - Step 2: Convert to fraction form
129.07/193.73 = 115.34/x - Step 3: Cross multiply
129.07x = 193.73 × 115.34 - Step 4: Simplify right side
129.07x = 22,344.24 - Step 5: Solve for x
x = 22,344.24/129.07 - Step 6: Final answer
x = 173.11
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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.