Finding the Fourth Proportional to 129.24, 193.84 and 37.92
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Solution
The fourth proportional to 129.24, 193.84 and 37.92 is: 56.87
Step by Step Solution
- Step 1: Write the proportion equation
129.24 : 193.84 = 37.92 : x - Step 2: Convert to fraction form
129.24/193.84 = 37.92/x - Step 3: Cross multiply
129.24x = 193.84 × 37.92 - Step 4: Simplify right side
129.24x = 7,349.25 - Step 5: Solve for x
x = 7,349.25/129.24 - Step 6: Final answer
x = 56.87
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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.