Finding the Fourth Proportional to 263.70, 395.74 and 109.70
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Solution
The fourth proportional to 263.70, 395.74 and 109.70 is: 164.63
Step by Step Solution
- Step 1: Write the proportion equation
263.70 : 395.74 = 109.70 : x - Step 2: Convert to fraction form
263.70/395.74 = 109.70/x - Step 3: Cross multiply
263.70x = 395.74 × 109.70 - Step 4: Simplify right side
263.70x = 43,412.68 - Step 5: Solve for x
x = 43,412.68/263.70 - Step 6: Final answer
x = 164.63
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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.