Finding the Fourth Proportional to 79.11, 119.12 and 69.08
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Solution
The fourth proportional to 79.11, 119.12 and 69.08 is: 104.02
Step by Step Solution
- Step 1: Write the proportion equation
79.11 : 119.12 = 69.08 : x - Step 2: Convert to fraction form
79.11/119.12 = 69.08/x - Step 3: Cross multiply
79.11x = 119.12 × 69.08 - Step 4: Simplify right side
79.11x = 8,228.81 - Step 5: Solve for x
x = 8,228.81/79.11 - Step 6: Final answer
x = 104.02
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.