Finding the Fourth Proportional to 461.97, 637.09 and 312.62
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Solution
The fourth proportional to 461.97, 637.09 and 312.62 is: 431.12
Step by Step Solution
- Step 1: Write the proportion equation
461.97 : 637.09 = 312.62 : x - Step 2: Convert to fraction form
461.97/637.09 = 312.62/x - Step 3: Cross multiply
461.97x = 637.09 × 312.62 - Step 4: Simplify right side
461.97x = 199,163.11 - Step 5: Solve for x
x = 199,163.11/461.97 - Step 6: Final answer
x = 431.12
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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.