Finding the Fourth Proportional to 1,206.60, 1,810 and 384.99
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Solution
The fourth proportional to 1,206.60, 1,810 and 384.99 is: 577.52
Step by Step Solution
- Step 1: Write the proportion equation
1,206.60 : 1,810 = 384.99 : x - Step 2: Convert to fraction form
1,206.60/1,810 = 384.99/x - Step 3: Cross multiply
1,206.60x = 1,810 × 384.99 - Step 4: Simplify right side
1,206.60x = 696,831.90 - Step 5: Solve for x
x = 696,831.90/1,206.60 - Step 6: Final answer
x = 577.52
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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.