Finding the Fourth Proportional to 264.63, 396.80 and 81.99
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Solution
The fourth proportional to 264.63, 396.80 and 81.99 is: 122.94
Step by Step Solution
- Step 1: Write the proportion equation
264.63 : 396.80 = 81.99 : x - Step 2: Convert to fraction form
264.63/396.80 = 81.99/x - Step 3: Cross multiply
264.63x = 396.80 × 81.99 - Step 4: Simplify right side
264.63x = 32,533.22 - Step 5: Solve for x
x = 32,533.22/264.63 - Step 6: Final answer
x = 122.94
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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.