Finding the Fourth Proportional to 407.18, 562.08 and 308.96
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Solution
The fourth proportional to 407.18, 562.08 and 308.96 is: 426.50
Step by Step Solution
- Step 1: Write the proportion equation
407.18 : 562.08 = 308.96 : x - Step 2: Convert to fraction form
407.18/562.08 = 308.96/x - Step 3: Cross multiply
407.18x = 562.08 × 308.96 - Step 4: Simplify right side
407.18x = 173,660.24 - Step 5: Solve for x
x = 173,660.24/407.18 - Step 6: Final answer
x = 426.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.