Finding the Fourth Proportional to 99.03, 136.53 and 82.68
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Solution
The fourth proportional to 99.03, 136.53 and 82.68 is: 113.99
Step by Step Solution
- Step 1: Write the proportion equation
99.03 : 136.53 = 82.68 : x - Step 2: Convert to fraction form
99.03/136.53 = 82.68/x - Step 3: Cross multiply
99.03x = 136.53 × 82.68 - Step 4: Simplify right side
99.03x = 11,288.30 - Step 5: Solve for x
x = 11,288.30/99.03 - Step 6: Final answer
x = 113.99
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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.