Finding the Fourth Proportional to 476.11, 657.21 and 279.63
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Solution
The fourth proportional to 476.11, 657.21 and 279.63 is: 385.99
Step by Step Solution
- Step 1: Write the proportion equation
476.11 : 657.21 = 279.63 : x - Step 2: Convert to fraction form
476.11/657.21 = 279.63/x - Step 3: Cross multiply
476.11x = 657.21 × 279.63 - Step 4: Simplify right side
476.11x = 183,775.63 - Step 5: Solve for x
x = 183,775.63/476.11 - Step 6: Final answer
x = 385.99
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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.