Finding the Fourth Proportional to 98.19, 135.54 and 73.70
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Solution
The fourth proportional to 98.19, 135.54 and 73.70 is: 101.73
Step by Step Solution
- Step 1: Write the proportion equation
98.19 : 135.54 = 73.70 : x - Step 2: Convert to fraction form
98.19/135.54 = 73.70/x - Step 3: Cross multiply
98.19x = 135.54 × 73.70 - Step 4: Simplify right side
98.19x = 9,989.30 - Step 5: Solve for x
x = 9,989.30/98.19 - Step 6: Final answer
x = 101.73
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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.