Finding the Fourth Proportional to 416.88, 625.68 and 398.88
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Solution
The fourth proportional to 416.88, 625.68 and 398.88 is: 598.66
Step by Step Solution
- Step 1: Write the proportion equation
416.88 : 625.68 = 398.88 : x - Step 2: Convert to fraction form
416.88/625.68 = 398.88/x - Step 3: Cross multiply
416.88x = 625.68 × 398.88 - Step 4: Simplify right side
416.88x = 249,571.24 - Step 5: Solve for x
x = 249,571.24/416.88 - Step 6: Final answer
x = 598.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.