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Finding the Fourth Proportional to 609.33, 913.50 and 442.56

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Solution

The fourth proportional to 609.33, 913.50 and 442.56 is: 663.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.33 : 913.50 = 442.56 : x
  2. Step 2: Convert to fraction form
    609.33/913.50 = 442.56/x
  3. Step 3: Cross multiply
    609.33x = 913.50 × 442.56
  4. Step 4: Simplify right side
    609.33x = 404,278.56
  5. Step 5: Solve for x
    x = 404,278.56/609.33
  6. Step 6: Final answer
    x = 663.48

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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.