Finding the Fourth Proportional to 395.18, 545.19 and 239.66
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Solution
The fourth proportional to 395.18, 545.19 and 239.66 is: 330.63
Step by Step Solution
- Step 1: Write the proportion equation
395.18 : 545.19 = 239.66 : x - Step 2: Convert to fraction form
395.18/545.19 = 239.66/x - Step 3: Cross multiply
395.18x = 545.19 × 239.66 - Step 4: Simplify right side
395.18x = 130,660.24 - Step 5: Solve for x
x = 130,660.24/395.18 - Step 6: Final answer
x = 330.63
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.