Finding the Fourth Proportional to 100.28, 137.49 and 98.46
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Solution
The fourth proportional to 100.28, 137.49 and 98.46 is: 134.99
Step by Step Solution
- Step 1: Write the proportion equation
100.28 : 137.49 = 98.46 : x - Step 2: Convert to fraction form
100.28/137.49 = 98.46/x - Step 3: Cross multiply
100.28x = 137.49 × 98.46 - Step 4: Simplify right side
100.28x = 13,536.90 - Step 5: Solve for x
x = 13,536.90/100.28 - Step 6: Final answer
x = 134.99
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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.