Finding the Fourth Proportional to 94.99, 129.90 and 94.99
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Solution
The fourth proportional to 94.99, 129.90 and 94.99 is: 129.90
Step by Step Solution
- Step 1: Write the proportion equation
94.99 : 129.90 = 94.99 : x - Step 2: Convert to fraction form
94.99/129.90 = 94.99/x - Step 3: Cross multiply
94.99x = 129.90 × 94.99 - Step 4: Simplify right side
94.99x = 12,339.20 - Step 5: Solve for x
x = 12,339.20/94.99 - Step 6: Final answer
x = 129.90
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.