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Finding the Fourth Proportional to 609.36, 911.80 and 535.89

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Solution

The fourth proportional to 609.36, 911.80 and 535.89 is: 801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.36 : 911.80 = 535.89 : x
  2. Step 2: Convert to fraction form
    609.36/911.80 = 535.89/x
  3. Step 3: Cross multiply
    609.36x = 911.80 × 535.89
  4. Step 4: Simplify right side
    609.36x = 488,624.50
  5. Step 5: Solve for x
    x = 488,624.50/609.36
  6. Step 6: Final answer
    x = 801.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.