Finding the Fourth Proportional to 338.70, 467.40 and 207.70
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Solution
The fourth proportional to 338.70, 467.40 and 207.70 is: 286.63
Step by Step Solution
- Step 1: Write the proportion equation
338.70 : 467.40 = 207.70 : x - Step 2: Convert to fraction form
338.70/467.40 = 207.70/x - Step 3: Cross multiply
338.70x = 467.40 × 207.70 - Step 4: Simplify right side
338.70x = 97,078.98 - Step 5: Solve for x
x = 97,078.98/338.70 - Step 6: Final answer
x = 286.63
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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.