Finding the Fourth Proportional to 169.21, 254.25 and 144.99
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Solution
The fourth proportional to 169.21, 254.25 and 144.99 is: 217.86
Step by Step Solution
- Step 1: Write the proportion equation
169.21 : 254.25 = 144.99 : x - Step 2: Convert to fraction form
169.21/254.25 = 144.99/x - Step 3: Cross multiply
169.21x = 254.25 × 144.99 - Step 4: Simplify right side
169.21x = 36,863.71 - Step 5: Solve for x
x = 36,863.71/169.21 - Step 6: Final answer
x = 217.86
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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.