Finding the Fourth Proportional to 228.93, 315.91 and 130.68
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Solution
The fourth proportional to 228.93, 315.91 and 130.68 is: 180.33
Step by Step Solution
- Step 1: Write the proportion equation
228.93 : 315.91 = 130.68 : x - Step 2: Convert to fraction form
228.93/315.91 = 130.68/x - Step 3: Cross multiply
228.93x = 315.91 × 130.68 - Step 4: Simplify right side
228.93x = 41,282.13 - Step 5: Solve for x
x = 41,282.13/228.93 - Step 6: Final answer
x = 180.33
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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.