Finding the Fourth Proportional to 88.92, 122.49 and 68.13
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Solution
The fourth proportional to 88.92, 122.49 and 68.13 is: 93.85
Step by Step Solution
- Step 1: Write the proportion equation
88.92 : 122.49 = 68.13 : x - Step 2: Convert to fraction form
88.92/122.49 = 68.13/x - Step 3: Cross multiply
88.92x = 122.49 × 68.13 - Step 4: Simplify right side
88.92x = 8,345.24 - Step 5: Solve for x
x = 8,345.24/88.92 - Step 6: Final answer
x = 93.85
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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.