Finding the Fourth Proportional to 79.45, 119.07 and 69.26
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Solution
The fourth proportional to 79.45, 119.07 and 69.26 is: 103.79
Step by Step Solution
- Step 1: Write the proportion equation
79.45 : 119.07 = 69.26 : x - Step 2: Convert to fraction form
79.45/119.07 = 69.26/x - Step 3: Cross multiply
79.45x = 119.07 × 69.26 - Step 4: Simplify right side
79.45x = 8,246.19 - Step 5: Solve for x
x = 8,246.19/79.45 - Step 6: Final answer
x = 103.79
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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.