Finding the Fourth Proportional to 778.42, 1,073.18 and 556.99
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Solution
The fourth proportional to 778.42, 1,073.18 and 556.99 is: 767.90
Step by Step Solution
- Step 1: Write the proportion equation
778.42 : 1,073.18 = 556.99 : x - Step 2: Convert to fraction form
778.42/1,073.18 = 556.99/x - Step 3: Cross multiply
778.42x = 1,073.18 × 556.99 - Step 4: Simplify right side
778.42x = 597,749.24 - Step 5: Solve for x
x = 597,749.24/778.42 - Step 6: Final answer
x = 767.90
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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.