Finding the Fourth Proportional to 129.04, 193.08 and 115.23
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Solution
The fourth proportional to 129.04, 193.08 and 115.23 is: 172.43
Step by Step Solution
- Step 1: Write the proportion equation
129.04 : 193.08 = 115.23 : x - Step 2: Convert to fraction form
129.04/193.08 = 115.23/x - Step 3: Cross multiply
129.04x = 193.08 × 115.23 - Step 4: Simplify right side
129.04x = 22,249.76 - Step 5: Solve for x
x = 22,249.76/129.04 - Step 6: Final answer
x = 172.43
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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.