Finding the Fourth Proportional to 230.18, 317.64 and 126.68
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Solution
The fourth proportional to 230.18, 317.64 and 126.68 is: 174.81
Step by Step Solution
- Step 1: Write the proportion equation
230.18 : 317.64 = 126.68 : x - Step 2: Convert to fraction form
230.18/317.64 = 126.68/x - Step 3: Cross multiply
230.18x = 317.64 × 126.68 - Step 4: Simplify right side
230.18x = 40,237.05 - Step 5: Solve for x
x = 40,237.05/230.18 - Step 6: Final answer
x = 174.81
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.