Finding the Fourth Proportional to 162.95, 243.86 and 139.70
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Solution
The fourth proportional to 162.95, 243.86 and 139.70 is: 209.07
Step by Step Solution
- Step 1: Write the proportion equation
162.95 : 243.86 = 139.70 : x - Step 2: Convert to fraction form
162.95/243.86 = 139.70/x - Step 3: Cross multiply
162.95x = 243.86 × 139.70 - Step 4: Simplify right side
162.95x = 34,067.15 - Step 5: Solve for x
x = 34,067.15/162.95 - Step 6: Final answer
x = 209.07
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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.