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Finding the Fourth Proportional to 609.07, 908.85 and 543.62

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Solution

The fourth proportional to 609.07, 908.85 and 543.62 is: 811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.07 : 908.85 = 543.62 : x
  2. Step 2: Convert to fraction form
    609.07/908.85 = 543.62/x
  3. Step 3: Cross multiply
    609.07x = 908.85 × 543.62
  4. Step 4: Simplify right side
    609.07x = 494,069.04
  5. Step 5: Solve for x
    x = 494,069.04/609.07
  6. Step 6: Final answer
    x = 811.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.