Finding the Fourth Proportional to 201.18, 301.66 and 71.13
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Solution
The fourth proportional to 201.18, 301.66 and 71.13 is: 106.66
Step by Step Solution
- Step 1: Write the proportion equation
201.18 : 301.66 = 71.13 : x - Step 2: Convert to fraction form
201.18/301.66 = 71.13/x - Step 3: Cross multiply
201.18x = 301.66 × 71.13 - Step 4: Simplify right side
201.18x = 21,457.08 - Step 5: Solve for x
x = 21,457.08/201.18 - Step 6: Final answer
x = 106.66
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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.