Finding the Fourth Proportional to 356.35, 490.99 and 239.71
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Solution
The fourth proportional to 356.35, 490.99 and 239.71 is: 330.28
Step by Step Solution
- Step 1: Write the proportion equation
356.35 : 490.99 = 239.71 : x - Step 2: Convert to fraction form
356.35/490.99 = 239.71/x - Step 3: Cross multiply
356.35x = 490.99 × 239.71 - Step 4: Simplify right side
356.35x = 117,695.21 - Step 5: Solve for x
x = 117,695.21/356.35 - Step 6: Final answer
x = 330.28
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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.