Finding the Fourth Proportional to 88.75, 133.28 and 84.19
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Solution
The fourth proportional to 88.75, 133.28 and 84.19 is: 126.43
Step by Step Solution
- Step 1: Write the proportion equation
88.75 : 133.28 = 84.19 : x - Step 2: Convert to fraction form
88.75/133.28 = 84.19/x - Step 3: Cross multiply
88.75x = 133.28 × 84.19 - Step 4: Simplify right side
88.75x = 11,220.84 - Step 5: Solve for x
x = 11,220.84/88.75 - Step 6: Final answer
x = 126.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.