Finding the Fourth Proportional to 398.48, 549.84 and 267.26
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Solution
The fourth proportional to 398.48, 549.84 and 267.26 is: 368.78
Step by Step Solution
- Step 1: Write the proportion equation
398.48 : 549.84 = 267.26 : x - Step 2: Convert to fraction form
398.48/549.84 = 267.26/x - Step 3: Cross multiply
398.48x = 549.84 × 267.26 - Step 4: Simplify right side
398.48x = 146,950.24 - Step 5: Solve for x
x = 146,950.24/398.48 - Step 6: Final answer
x = 368.78
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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.