Finding the Fourth Proportional to 94.19, 129.99 and 70.99
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Solution
The fourth proportional to 94.19, 129.99 and 70.99 is: 97.97
Step by Step Solution
- Step 1: Write the proportion equation
94.19 : 129.99 = 70.99 : x - Step 2: Convert to fraction form
94.19/129.99 = 70.99/x - Step 3: Cross multiply
94.19x = 129.99 × 70.99 - Step 4: Simplify right side
94.19x = 9,227.67 - Step 5: Solve for x
x = 9,227.67/94.19 - Step 6: Final answer
x = 97.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.