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Finding the Fourth Proportional to 441.12, 609.03 and 386.46

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Solution

The fourth proportional to 441.12, 609.03 and 386.46 is: 533.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.12 : 609.03 = 386.46 : x
  2. Step 2: Convert to fraction form
    441.12/609.03 = 386.46/x
  3. Step 3: Cross multiply
    441.12x = 609.03 × 386.46
  4. Step 4: Simplify right side
    441.12x = 235,365.73
  5. Step 5: Solve for x
    x = 235,365.73/441.12
  6. Step 6: Final answer
    x = 533.56

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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.