Finding the Fourth Proportional to 387.36, 584.08 and 355.07
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Solution
The fourth proportional to 387.36, 584.08 and 355.07 is: 535.40
Step by Step Solution
- Step 1: Write the proportion equation
387.36 : 584.08 = 355.07 : x - Step 2: Convert to fraction form
387.36/584.08 = 355.07/x - Step 3: Cross multiply
387.36x = 584.08 × 355.07 - Step 4: Simplify right side
387.36x = 207,391.19 - Step 5: Solve for x
x = 207,391.19/387.36 - Step 6: Final answer
x = 535.40
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.