Finding the Fourth Proportional to 305.28, 457.68 and 122.61
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Solution
The fourth proportional to 305.28, 457.68 and 122.61 is: 183.82
Step by Step Solution
- Step 1: Write the proportion equation
305.28 : 457.68 = 122.61 : x - Step 2: Convert to fraction form
305.28/457.68 = 122.61/x - Step 3: Cross multiply
305.28x = 457.68 × 122.61 - Step 4: Simplify right side
305.28x = 56,116.14 - Step 5: Solve for x
x = 56,116.14/305.28 - Step 6: Final answer
x = 183.82
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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.