Finding the Fourth Proportional to 387.11, 534.08 and 229.77
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Solution
The fourth proportional to 387.11, 534.08 and 229.77 is: 317.00
Step by Step Solution
- Step 1: Write the proportion equation
387.11 : 534.08 = 229.77 : x - Step 2: Convert to fraction form
387.11/534.08 = 229.77/x - Step 3: Cross multiply
387.11x = 534.08 × 229.77 - Step 4: Simplify right side
387.11x = 122,716.14 - Step 5: Solve for x
x = 122,716.14/387.11 - Step 6: Final answer
x = 317.00
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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.