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Finding the Fourth Proportional to 589.64, 885.45 and 443.39

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Solution

The fourth proportional to 589.64, 885.45 and 443.39 is: 665.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.64 : 885.45 = 443.39 : x
  2. Step 2: Convert to fraction form
    589.64/885.45 = 443.39/x
  3. Step 3: Cross multiply
    589.64x = 885.45 × 443.39
  4. Step 4: Simplify right side
    589.64x = 392,599.68
  5. Step 5: Solve for x
    x = 392,599.68/589.64
  6. Step 6: Final answer
    x = 665.83

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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.