Finding the Fourth Proportional to 98.24, 135.44 and 84.36
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Solution
The fourth proportional to 98.24, 135.44 and 84.36 is: 116.31
Step by Step Solution
- Step 1: Write the proportion equation
98.24 : 135.44 = 84.36 : x - Step 2: Convert to fraction form
98.24/135.44 = 84.36/x - Step 3: Cross multiply
98.24x = 135.44 × 84.36 - Step 4: Simplify right side
98.24x = 11,425.30 - Step 5: Solve for x
x = 11,425.30/98.24 - Step 6: Final answer
x = 116.31
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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.