Finding the Fourth Proportional to 88.70, 122.29 and 68.99
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Solution
The fourth proportional to 88.70, 122.29 and 68.99 is: 95.12
Step by Step Solution
- Step 1: Write the proportion equation
88.70 : 122.29 = 68.99 : x - Step 2: Convert to fraction form
88.70/122.29 = 68.99/x - Step 3: Cross multiply
88.70x = 122.29 × 68.99 - Step 4: Simplify right side
88.70x = 8,436.39 - Step 5: Solve for x
x = 8,436.39/88.70 - Step 6: Final answer
x = 95.12
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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.