Finding the Fourth Proportional to 305.36, 457.70 and 122.66
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Solution
The fourth proportional to 305.36, 457.70 and 122.66 is: 183.85
Step by Step Solution
- Step 1: Write the proportion equation
305.36 : 457.70 = 122.66 : x - Step 2: Convert to fraction form
305.36/457.70 = 122.66/x - Step 3: Cross multiply
305.36x = 457.70 × 122.66 - Step 4: Simplify right side
305.36x = 56,141.48 - Step 5: Solve for x
x = 56,141.48/305.36 - Step 6: Final answer
x = 183.85
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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.