Finding the Fourth Proportional to 202.26, 303.28 and 86.68
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Solution
The fourth proportional to 202.26, 303.28 and 86.68 is: 129.97
Step by Step Solution
- Step 1: Write the proportion equation
202.26 : 303.28 = 86.68 : x - Step 2: Convert to fraction form
202.26/303.28 = 86.68/x - Step 3: Cross multiply
202.26x = 303.28 × 86.68 - Step 4: Simplify right side
202.26x = 26,288.31 - Step 5: Solve for x
x = 26,288.31/202.26 - Step 6: Final answer
x = 129.97
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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.