Finding the Fourth Proportional to 867.99, 1,197.99 and 518.70
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Solution
The fourth proportional to 867.99, 1,197.99 and 518.70 is: 715.90
Step by Step Solution
- Step 1: Write the proportion equation
867.99 : 1,197.99 = 518.70 : x - Step 2: Convert to fraction form
867.99/1,197.99 = 518.70/x - Step 3: Cross multiply
867.99x = 1,197.99 × 518.70 - Step 4: Simplify right side
867.99x = 621,397.41 - Step 5: Solve for x
x = 621,397.41/867.99 - Step 6: Final answer
x = 715.90
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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.