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Finding the Fourth Proportional to 647.25, 892.41 and 460.46

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Solution

The fourth proportional to 647.25, 892.41 and 460.46 is: 634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.25 : 892.41 = 460.46 : x
  2. Step 2: Convert to fraction form
    647.25/892.41 = 460.46/x
  3. Step 3: Cross multiply
    647.25x = 892.41 × 460.46
  4. Step 4: Simplify right side
    647.25x = 410,914.65
  5. Step 5: Solve for x
    x = 410,914.65/647.25
  6. Step 6: Final answer
    x = 634.86

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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.