Finding the Fourth Proportional to 132.09, 197.99 and 66.99
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Solution
The fourth proportional to 132.09, 197.99 and 66.99 is: 100.41
Step by Step Solution
- Step 1: Write the proportion equation
132.09 : 197.99 = 66.99 : x - Step 2: Convert to fraction form
132.09/197.99 = 66.99/x - Step 3: Cross multiply
132.09x = 197.99 × 66.99 - Step 4: Simplify right side
132.09x = 13,263.35 - Step 5: Solve for x
x = 13,263.35/132.09 - Step 6: Final answer
x = 100.41
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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.