Finding the Fourth Proportional to 201.41, 302.13 and 79.68
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Solution
The fourth proportional to 201.41, 302.13 and 79.68 is: 119.52
Step by Step Solution
- Step 1: Write the proportion equation
201.41 : 302.13 = 79.68 : x - Step 2: Convert to fraction form
201.41/302.13 = 79.68/x - Step 3: Cross multiply
201.41x = 302.13 × 79.68 - Step 4: Simplify right side
201.41x = 24,071.81 - Step 5: Solve for x
x = 24,071.81/201.41 - Step 6: Final answer
x = 119.52
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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.