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Finding the Fourth Proportional to 688.33, 1,031.22 and 444.37

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Solution

The fourth proportional to 688.33, 1,031.22 and 444.37 is: 665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.33 : 1,031.22 = 444.37 : x
  2. Step 2: Convert to fraction form
    688.33/1,031.22 = 444.37/x
  3. Step 3: Cross multiply
    688.33x = 1,031.22 × 444.37
  4. Step 4: Simplify right side
    688.33x = 458,243.23
  5. Step 5: Solve for x
    x = 458,243.23/688.33
  6. Step 6: Final answer
    x = 665.73

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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.