Finding the Fourth Proportional to 305.07, 420.99 and 174.07
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Solution
The fourth proportional to 305.07, 420.99 and 174.07 is: 240.22
Step by Step Solution
- Step 1: Write the proportion equation
305.07 : 420.99 = 174.07 : x - Step 2: Convert to fraction form
305.07/420.99 = 174.07/x - Step 3: Cross multiply
305.07x = 420.99 × 174.07 - Step 4: Simplify right side
305.07x = 73,282.58 - Step 5: Solve for x
x = 73,282.58/305.07 - Step 6: Final answer
x = 240.22
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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.