Finding the Fourth Proportional to 68.84, 103.26 and 28.26
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Solution
The fourth proportional to 68.84, 103.26 and 28.26 is: 42.39
Step by Step Solution
- Step 1: Write the proportion equation
68.84 : 103.26 = 28.26 : x - Step 2: Convert to fraction form
68.84/103.26 = 28.26/x - Step 3: Cross multiply
68.84x = 103.26 × 28.26 - Step 4: Simplify right side
68.84x = 2,918.13 - Step 5: Solve for x
x = 2,918.13/68.84 - Step 6: Final answer
x = 42.39
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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.