Finding the Fourth Proportional to 977.14, 1,465.21 and 515.17
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Solution
The fourth proportional to 977.14, 1,465.21 and 515.17 is: 772.49
Step by Step Solution
- Step 1: Write the proportion equation
977.14 : 1,465.21 = 515.17 : x - Step 2: Convert to fraction form
977.14/1,465.21 = 515.17/x - Step 3: Cross multiply
977.14x = 1,465.21 × 515.17 - Step 4: Simplify right side
977.14x = 754,832.24 - Step 5: Solve for x
x = 754,832.24/977.14 - Step 6: Final answer
x = 772.49
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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.