Finding the Fourth Proportional to 355.17, 490.14 and 207.84
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Solution
The fourth proportional to 355.17, 490.14 and 207.84 is: 286.81
Step by Step Solution
- Step 1: Write the proportion equation
355.17 : 490.14 = 207.84 : x - Step 2: Convert to fraction form
355.17/490.14 = 207.84/x - Step 3: Cross multiply
355.17x = 490.14 × 207.84 - Step 4: Simplify right side
355.17x = 101,867.99 - Step 5: Solve for x
x = 101,867.99/355.17 - Step 6: Final answer
x = 286.81
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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.