Finding the Fourth Proportional to 292.18, 438 and 129.79
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Solution
The fourth proportional to 292.18, 438 and 129.79 is: 194.57
Step by Step Solution
- Step 1: Write the proportion equation
292.18 : 438 = 129.79 : x - Step 2: Convert to fraction form
292.18/438 = 129.79/x - Step 3: Cross multiply
292.18x = 438 × 129.79 - Step 4: Simplify right side
292.18x = 56,848.02 - Step 5: Solve for x
x = 56,848.02/292.18 - Step 6: Final answer
x = 194.57
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.