Finding the Fourth Proportional to 420.99, 581.36 and 266.01
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Solution
The fourth proportional to 420.99, 581.36 and 266.01 is: 367.34
Step by Step Solution
- Step 1: Write the proportion equation
420.99 : 581.36 = 266.01 : x - Step 2: Convert to fraction form
420.99/581.36 = 266.01/x - Step 3: Cross multiply
420.99x = 581.36 × 266.01 - Step 4: Simplify right side
420.99x = 154,646.24 - Step 5: Solve for x
x = 154,646.24/420.99 - Step 6: Final answer
x = 367.34
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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.