Finding the Fourth Proportional to 418.36, 577.74 and 287.68
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Solution
The fourth proportional to 418.36, 577.74 and 287.68 is: 397.28
Step by Step Solution
- Step 1: Write the proportion equation
418.36 : 577.74 = 287.68 : x - Step 2: Convert to fraction form
418.36/577.74 = 287.68/x - Step 3: Cross multiply
418.36x = 577.74 × 287.68 - Step 4: Simplify right side
418.36x = 166,204.24 - Step 5: Solve for x
x = 166,204.24/418.36 - Step 6: Final answer
x = 397.28
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.