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Finding the Fourth Proportional to 446.88, 616.55 and 281.26

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Solution

The fourth proportional to 446.88, 616.55 and 281.26 is: 388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.88 : 616.55 = 281.26 : x
  2. Step 2: Convert to fraction form
    446.88/616.55 = 281.26/x
  3. Step 3: Cross multiply
    446.88x = 616.55 × 281.26
  4. Step 4: Simplify right side
    446.88x = 173,410.85
  5. Step 5: Solve for x
    x = 173,410.85/446.88
  6. Step 6: Final answer
    x = 388.05

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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.