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Finding the Fourth Proportional to 446.22, 616.28 and 288.81

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Solution

The fourth proportional to 446.22, 616.28 and 288.81 is: 398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.22 : 616.28 = 288.81 : x
  2. Step 2: Convert to fraction form
    446.22/616.28 = 288.81/x
  3. Step 3: Cross multiply
    446.22x = 616.28 × 288.81
  4. Step 4: Simplify right side
    446.22x = 177,986.38
  5. Step 5: Solve for x
    x = 177,986.38/446.22
  6. Step 6: Final answer
    x = 398.88

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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.