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Finding the Fourth Proportional to 446.76, 616.58 and 280.84

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Solution

The fourth proportional to 446.76, 616.58 and 280.84 is: 387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.76 : 616.58 = 280.84 : x
  2. Step 2: Convert to fraction form
    446.76/616.58 = 280.84/x
  3. Step 3: Cross multiply
    446.76x = 616.58 × 280.84
  4. Step 4: Simplify right side
    446.76x = 173,160.33
  5. Step 5: Solve for x
    x = 173,160.33/446.76
  6. Step 6: Final answer
    x = 387.59

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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.