Finding the Fourth Proportional to 201.64, 302.14 and 129.35
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Solution
The fourth proportional to 201.64, 302.14 and 129.35 is: 193.82
Step by Step Solution
- Step 1: Write the proportion equation
201.64 : 302.14 = 129.35 : x - Step 2: Convert to fraction form
201.64/302.14 = 129.35/x - Step 3: Cross multiply
201.64x = 302.14 × 129.35 - Step 4: Simplify right side
201.64x = 39,081.81 - Step 5: Solve for x
x = 39,081.81/201.64 - Step 6: Final answer
x = 193.82
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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.