Finding the Fourth Proportional to 69.28, 103.84 and 34.99
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Solution
The fourth proportional to 69.28, 103.84 and 34.99 is: 52.45
Step by Step Solution
- Step 1: Write the proportion equation
69.28 : 103.84 = 34.99 : x - Step 2: Convert to fraction form
69.28/103.84 = 34.99/x - Step 3: Cross multiply
69.28x = 103.84 × 34.99 - Step 4: Simplify right side
69.28x = 3,633.19 - Step 5: Solve for x
x = 3,633.19/69.28 - Step 6: Final answer
x = 52.45
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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.