Finding the Fourth Proportional to 405.18, 558.99 and 249.66
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Solution
The fourth proportional to 405.18, 558.99 and 249.66 is: 344.43
Step by Step Solution
- Step 1: Write the proportion equation
405.18 : 558.99 = 249.66 : x - Step 2: Convert to fraction form
405.18/558.99 = 249.66/x - Step 3: Cross multiply
405.18x = 558.99 × 249.66 - Step 4: Simplify right side
405.18x = 139,557.44 - Step 5: Solve for x
x = 139,557.44/405.18 - Step 6: Final answer
x = 344.43
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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.