Finding the Fourth Proportional to 387.26, 534.19 and 239.64
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Solution
The fourth proportional to 387.26, 534.19 and 239.64 is: 330.56
Step by Step Solution
- Step 1: Write the proportion equation
387.26 : 534.19 = 239.64 : x - Step 2: Convert to fraction form
387.26/534.19 = 239.64/x - Step 3: Cross multiply
387.26x = 534.19 × 239.64 - Step 4: Simplify right side
387.26x = 128,013.29 - Step 5: Solve for x
x = 128,013.29/387.26 - Step 6: Final answer
x = 330.56
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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.