Finding the Fourth Proportional to 132.75, 198.99 and 64.23
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Solution
The fourth proportional to 132.75, 198.99 and 64.23 is: 96.28
Step by Step Solution
- Step 1: Write the proportion equation
132.75 : 198.99 = 64.23 : x - Step 2: Convert to fraction form
132.75/198.99 = 64.23/x - Step 3: Cross multiply
132.75x = 198.99 × 64.23 - Step 4: Simplify right side
132.75x = 12,781.13 - Step 5: Solve for x
x = 12,781.13/132.75 - Step 6: Final answer
x = 96.28
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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.