Finding the Fourth Proportional to 305.11, 457.88 and 122.55
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Solution
The fourth proportional to 305.11, 457.88 and 122.55 is: 183.91
Step by Step Solution
- Step 1: Write the proportion equation
305.11 : 457.88 = 122.55 : x - Step 2: Convert to fraction form
305.11/457.88 = 122.55/x - Step 3: Cross multiply
305.11x = 457.88 × 122.55 - Step 4: Simplify right side
305.11x = 56,113.19 - Step 5: Solve for x
x = 56,113.19/305.11 - Step 6: Final answer
x = 183.91
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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.