Finding the Fourth Proportional to 340.77, 469.94 and 228.99
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Solution
The fourth proportional to 340.77, 469.94 and 228.99 is: 315.79
Step by Step Solution
- Step 1: Write the proportion equation
340.77 : 469.94 = 228.99 : x - Step 2: Convert to fraction form
340.77/469.94 = 228.99/x - Step 3: Cross multiply
340.77x = 469.94 × 228.99 - Step 4: Simplify right side
340.77x = 107,612.13 - Step 5: Solve for x
x = 107,612.13/340.77 - Step 6: Final answer
x = 315.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.