Finding the Fourth Proportional to 129.28, 193.93 and 33.10
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Solution
The fourth proportional to 129.28, 193.93 and 33.10 is: 49.65
Step by Step Solution
- Step 1: Write the proportion equation
129.28 : 193.93 = 33.10 : x - Step 2: Convert to fraction form
129.28/193.93 = 33.10/x - Step 3: Cross multiply
129.28x = 193.93 × 33.10 - Step 4: Simplify right side
129.28x = 6,419.08 - Step 5: Solve for x
x = 6,419.08/129.28 - Step 6: Final answer
x = 49.65
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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.