Finding the Fourth Proportional to 690.57, 951.57 and 572.19
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Solution
The fourth proportional to 690.57, 951.57 and 572.19 is: 788.45
Step by Step Solution
- Step 1: Write the proportion equation
690.57 : 951.57 = 572.19 : x - Step 2: Convert to fraction form
690.57/951.57 = 572.19/x - Step 3: Cross multiply
690.57x = 951.57 × 572.19 - Step 4: Simplify right side
690.57x = 544,478.84 - Step 5: Solve for x
x = 544,478.84/690.57 - Step 6: Final answer
x = 788.45
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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.