Finding the Fourth Proportional to 80.08, 119.93 and 69.66
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Solution
The fourth proportional to 80.08, 119.93 and 69.66 is: 104.32
Step by Step Solution
- Step 1: Write the proportion equation
80.08 : 119.93 = 69.66 : x - Step 2: Convert to fraction form
80.08/119.93 = 69.66/x - Step 3: Cross multiply
80.08x = 119.93 × 69.66 - Step 4: Simplify right side
80.08x = 8,354.32 - Step 5: Solve for x
x = 8,354.32/80.08 - Step 6: Final answer
x = 104.32
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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.