Finding the Fourth Proportional to 340.35, 511.20 and 291.99
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Solution
The fourth proportional to 340.35, 511.20 and 291.99 is: 438.57
Step by Step Solution
- Step 1: Write the proportion equation
340.35 : 511.20 = 291.99 : x - Step 2: Convert to fraction form
340.35/511.20 = 291.99/x - Step 3: Cross multiply
340.35x = 511.20 × 291.99 - Step 4: Simplify right side
340.35x = 149,267.21 - Step 5: Solve for x
x = 149,267.21/340.35 - Step 6: Final answer
x = 438.57
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.