Finding the Fourth Proportional to 201.99, 302.58 and 129.90
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Solution
The fourth proportional to 201.99, 302.58 and 129.90 is: 194.59
Step by Step Solution
- Step 1: Write the proportion equation
201.99 : 302.58 = 129.90 : x - Step 2: Convert to fraction form
201.99/302.58 = 129.90/x - Step 3: Cross multiply
201.99x = 302.58 × 129.90 - Step 4: Simplify right side
201.99x = 39,305.14 - Step 5: Solve for x
x = 39,305.14/201.99 - Step 6: Final answer
x = 194.59
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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.