Finding the Fourth Proportional to 168.21, 252.75 and 143.99
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Solution
The fourth proportional to 168.21, 252.75 and 143.99 is: 216.35
Step by Step Solution
- Step 1: Write the proportion equation
168.21 : 252.75 = 143.99 : x - Step 2: Convert to fraction form
168.21/252.75 = 143.99/x - Step 3: Cross multiply
168.21x = 252.75 × 143.99 - Step 4: Simplify right side
168.21x = 36,392.21 - Step 5: Solve for x
x = 36,392.21/168.21 - Step 6: Final answer
x = 216.35
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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.