Finding the Fourth Proportional to 305.10, 457.79 and 122.63
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Solution
The fourth proportional to 305.10, 457.79 and 122.63 is: 183.99
Step by Step Solution
- Step 1: Write the proportion equation
305.10 : 457.79 = 122.63 : x - Step 2: Convert to fraction form
305.10/457.79 = 122.63/x - Step 3: Cross multiply
305.10x = 457.79 × 122.63 - Step 4: Simplify right side
305.10x = 56,135.89 - Step 5: Solve for x
x = 56,135.89/305.10 - Step 6: Final answer
x = 183.99
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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.