Finding the Fourth Proportional to 394.79, 544.91 and 228.99
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Solution
The fourth proportional to 394.79, 544.91 and 228.99 is: 316.07
Step by Step Solution
- Step 1: Write the proportion equation
394.79 : 544.91 = 228.99 : x - Step 2: Convert to fraction form
394.79/544.91 = 228.99/x - Step 3: Cross multiply
394.79x = 544.91 × 228.99 - Step 4: Simplify right side
394.79x = 124,781.13 - Step 5: Solve for x
x = 124,781.13/394.79 - Step 6: Final answer
x = 316.07
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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.