Finding the Fourth Proportional to 305.42, 457.99 and 122.68
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Solution
The fourth proportional to 305.42, 457.99 and 122.68 is: 183.97
Step by Step Solution
- Step 1: Write the proportion equation
305.42 : 457.99 = 122.68 : x - Step 2: Convert to fraction form
305.42/457.99 = 122.68/x - Step 3: Cross multiply
305.42x = 457.99 × 122.68 - Step 4: Simplify right side
305.42x = 56,186.48 - Step 5: Solve for x
x = 56,186.48/305.42 - Step 6: Final answer
x = 183.97
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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.