Finding the Fourth Proportional to 549.21, 824.09 and 317.55
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Solution
The fourth proportional to 549.21, 824.09 and 317.55 is: 476.48
Step by Step Solution
- Step 1: Write the proportion equation
549.21 : 824.09 = 317.55 : x - Step 2: Convert to fraction form
549.21/824.09 = 317.55/x - Step 3: Cross multiply
549.21x = 824.09 × 317.55 - Step 4: Simplify right side
549.21x = 261,688.19 - Step 5: Solve for x
x = 261,688.19/549.21 - Step 6: Final answer
x = 476.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.