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Finding the Fourth Proportional to 446.96, 671.88 and 415.28

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Solution

The fourth proportional to 446.96, 671.88 and 415.28 is: 624.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.96 : 671.88 = 415.28 : x
  2. Step 2: Convert to fraction form
    446.96/671.88 = 415.28/x
  3. Step 3: Cross multiply
    446.96x = 671.88 × 415.28
  4. Step 4: Simplify right side
    446.96x = 279,018.33
  5. Step 5: Solve for x
    x = 279,018.33/446.96
  6. Step 6: Final answer
    x = 624.26

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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.