Finding the Fourth Proportional to 305.00, 420.90 and 174
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Solution
The fourth proportional to 305.00, 420.90 and 174 is: 240.12
Step by Step Solution
- Step 1: Write the proportion equation
305.00 : 420.90 = 174 : x - Step 2: Convert to fraction form
305.00/420.90 = 174/x - Step 3: Cross multiply
305.00x = 420.90 × 174 - Step 4: Simplify right side
305.00x = 73,236.60 - Step 5: Solve for x
x = 73,236.60/305.00 - Step 6: Final answer
x = 240.12
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.