Finding the Fourth Proportional to 355.14, 489.35 and 236.99
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Solution
The fourth proportional to 355.14, 489.35 and 236.99 is: 326.54
Step by Step Solution
- Step 1: Write the proportion equation
355.14 : 489.35 = 236.99 : x - Step 2: Convert to fraction form
355.14/489.35 = 236.99/x - Step 3: Cross multiply
355.14x = 489.35 × 236.99 - Step 4: Simplify right side
355.14x = 115,967.42 - Step 5: Solve for x
x = 115,967.42/355.14 - Step 6: Final answer
x = 326.54
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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.