Finding the Fourth Proportional to 623.76, 860.58 and 402.99
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Solution
The fourth proportional to 623.76, 860.58 and 402.99 is: 555.99
Step by Step Solution
- Step 1: Write the proportion equation
623.76 : 860.58 = 402.99 : x - Step 2: Convert to fraction form
623.76/860.58 = 402.99/x - Step 3: Cross multiply
623.76x = 860.58 × 402.99 - Step 4: Simplify right side
623.76x = 346,805.13 - Step 5: Solve for x
x = 346,805.13/623.76 - Step 6: Final answer
x = 555.99
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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.