Finding the Fourth Proportional to 356.55, 491.99 and 199.19
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Solution
The fourth proportional to 356.55, 491.99 and 199.19 is: 274.85
Step by Step Solution
- Step 1: Write the proportion equation
356.55 : 491.99 = 199.19 : x - Step 2: Convert to fraction form
356.55/491.99 = 199.19/x - Step 3: Cross multiply
356.55x = 491.99 × 199.19 - Step 4: Simplify right side
356.55x = 97,998.08 - Step 5: Solve for x
x = 97,998.08/356.55 - Step 6: Final answer
x = 274.85
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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.