Finding the Fourth Proportional to 447.21, 616.55 and 315.99
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Solution
The fourth proportional to 447.21, 616.55 and 315.99 is: 435.64
Step by Step Solution
- Step 1: Write the proportion equation
447.21 : 616.55 = 315.99 : x - Step 2: Convert to fraction form
447.21/616.55 = 315.99/x - Step 3: Cross multiply
447.21x = 616.55 × 315.99 - Step 4: Simplify right side
447.21x = 194,822.05 - Step 5: Solve for x
x = 194,822.05/447.21 - Step 6: Final answer
x = 435.64
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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.