Finding the Fourth Proportional to 387.41, 534.26 and 239.99
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Solution
The fourth proportional to 387.41, 534.26 and 239.99 is: 330.96
Step by Step Solution
- Step 1: Write the proportion equation
387.41 : 534.26 = 239.99 : x - Step 2: Convert to fraction form
387.41/534.26 = 239.99/x - Step 3: Cross multiply
387.41x = 534.26 × 239.99 - Step 4: Simplify right side
387.41x = 128,214.99 - Step 5: Solve for x
x = 128,214.99/387.41 - Step 6: Final answer
x = 330.96
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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.