Finding the Fourth Proportional to 145.70, 218.44 and 68.62
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Solution
The fourth proportional to 145.70, 218.44 and 68.62 is: 102.87
Step by Step Solution
- Step 1: Write the proportion equation
145.70 : 218.44 = 68.62 : x - Step 2: Convert to fraction form
145.70/218.44 = 68.62/x - Step 3: Cross multiply
145.70x = 218.44 × 68.62 - Step 4: Simplify right side
145.70x = 14,988.26 - Step 5: Solve for x
x = 14,988.26/145.70 - Step 6: Final answer
x = 102.87
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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.