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Finding the Fourth Proportional to 672.26, 927.60 and 439.25

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Solution

The fourth proportional to 672.26, 927.60 and 439.25 is: 606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.26 : 927.60 = 439.25 : x
  2. Step 2: Convert to fraction form
    672.26/927.60 = 439.25/x
  3. Step 3: Cross multiply
    672.26x = 927.60 × 439.25
  4. Step 4: Simplify right side
    672.26x = 407,448.30
  5. Step 5: Solve for x
    x = 407,448.30/672.26
  6. Step 6: Final answer
    x = 606.09

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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.