Finding the Fourth Proportional to 225.13, 310.68 and 126.92
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Solution
The fourth proportional to 225.13, 310.68 and 126.92 is: 175.14
Step by Step Solution
- Step 1: Write the proportion equation
225.13 : 310.68 = 126.92 : x - Step 2: Convert to fraction form
225.13/310.68 = 126.92/x - Step 3: Cross multiply
225.13x = 310.68 × 126.92 - Step 4: Simplify right side
225.13x = 39,430.06 - Step 5: Solve for x
x = 39,430.06/225.13 - Step 6: Final answer
x = 175.14
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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.