Finding the Fourth Proportional to 98.19, 135.68 and 70.54
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Solution
The fourth proportional to 98.19, 135.68 and 70.54 is: 97.47
Step by Step Solution
- Step 1: Write the proportion equation
98.19 : 135.68 = 70.54 : x - Step 2: Convert to fraction form
98.19/135.68 = 70.54/x - Step 3: Cross multiply
98.19x = 135.68 × 70.54 - Step 4: Simplify right side
98.19x = 9,570.18 - Step 5: Solve for x
x = 9,570.18/98.19 - Step 6: Final answer
x = 97.47
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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.