Finding the Fourth Proportional to 266.24, 398.88 and 129.08
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Solution
The fourth proportional to 266.24, 398.88 and 129.08 is: 193.38
Step by Step Solution
- Step 1: Write the proportion equation
266.24 : 398.88 = 129.08 : x - Step 2: Convert to fraction form
266.24/398.88 = 129.08/x - Step 3: Cross multiply
266.24x = 398.88 × 129.08 - Step 4: Simplify right side
266.24x = 51,485.44 - Step 5: Solve for x
x = 51,485.44/266.24 - Step 6: Final answer
x = 193.38
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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.