Finding the Fourth Proportional to 88.08, 121.59 and 83.54
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Solution
The fourth proportional to 88.08, 121.59 and 83.54 is: 115.32
Step by Step Solution
- Step 1: Write the proportion equation
88.08 : 121.59 = 83.54 : x - Step 2: Convert to fraction form
88.08/121.59 = 83.54/x - Step 3: Cross multiply
88.08x = 121.59 × 83.54 - Step 4: Simplify right side
88.08x = 10,157.02 - Step 5: Solve for x
x = 10,157.02/88.08 - Step 6: Final answer
x = 115.32
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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.