Finding the Fourth Proportional to 129.34, 193.91 and 117.19
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Solution
The fourth proportional to 129.34, 193.91 and 117.19 is: 175.69
Step by Step Solution
- Step 1: Write the proportion equation
129.34 : 193.91 = 117.19 : x - Step 2: Convert to fraction form
129.34/193.91 = 117.19/x - Step 3: Cross multiply
129.34x = 193.91 × 117.19 - Step 4: Simplify right side
129.34x = 22,723.24 - Step 5: Solve for x
x = 22,723.24/129.34 - Step 6: Final answer
x = 175.69
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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.