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Finding the Fourth Proportional to 441.56, 609.10 and 389.23

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Solution

The fourth proportional to 441.56, 609.10 and 389.23 is: 536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.56 : 609.10 = 389.23 : x
  2. Step 2: Convert to fraction form
    441.56/609.10 = 389.23/x
  3. Step 3: Cross multiply
    441.56x = 609.10 × 389.23
  4. Step 4: Simplify right side
    441.56x = 237,079.99
  5. Step 5: Solve for x
    x = 237,079.99/441.56
  6. Step 6: Final answer
    x = 536.91

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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.