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Finding the Fourth Proportional to 609.11, 908.59 and 570.84

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Solution

The fourth proportional to 609.11, 908.59 and 570.84 is: 851.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.11 : 908.59 = 570.84 : x
  2. Step 2: Convert to fraction form
    609.11/908.59 = 570.84/x
  3. Step 3: Cross multiply
    609.11x = 908.59 × 570.84
  4. Step 4: Simplify right side
    609.11x = 518,659.52
  5. Step 5: Solve for x
    x = 518,659.52/609.11
  6. Step 6: Final answer
    x = 851.50

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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.