Finding the Fourth Proportional to 235.66, 325.21 and 130.75
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Solution
The fourth proportional to 235.66, 325.21 and 130.75 is: 180.43
Step by Step Solution
- Step 1: Write the proportion equation
235.66 : 325.21 = 130.75 : x - Step 2: Convert to fraction form
235.66/325.21 = 130.75/x - Step 3: Cross multiply
235.66x = 325.21 × 130.75 - Step 4: Simplify right side
235.66x = 42,518.93 - Step 5: Solve for x
x = 42,518.93/235.66 - Step 6: Final answer
x = 180.43
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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.