Finding the Fourth Proportional to 292.29, 438.15 and 129.99
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Solution
The fourth proportional to 292.29, 438.15 and 129.99 is: 194.86
Step by Step Solution
- Step 1: Write the proportion equation
292.29 : 438.15 = 129.99 : x - Step 2: Convert to fraction form
292.29/438.15 = 129.99/x - Step 3: Cross multiply
292.29x = 438.15 × 129.99 - Step 4: Simplify right side
292.29x = 56,955.12 - Step 5: Solve for x
x = 56,955.12/292.29 - Step 6: Final answer
x = 194.86
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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.