Finding the Fourth Proportional to 305.64, 421.74 and 174.62
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Solution
The fourth proportional to 305.64, 421.74 and 174.62 is: 240.95
Step by Step Solution
- Step 1: Write the proportion equation
305.64 : 421.74 = 174.62 : x - Step 2: Convert to fraction form
305.64/421.74 = 174.62/x - Step 3: Cross multiply
305.64x = 421.74 × 174.62 - Step 4: Simplify right side
305.64x = 73,644.24 - Step 5: Solve for x
x = 73,644.24/305.64 - Step 6: Final answer
x = 240.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.