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Finding the Fourth Proportional to 281.43, 422.55 and 246.60

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Solution

The fourth proportional to 281.43, 422.55 and 246.60 is: 370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.43 : 422.55 = 246.60 : x
  2. Step 2: Convert to fraction form
    281.43/422.55 = 246.60/x
  3. Step 3: Cross multiply
    281.43x = 422.55 × 246.60
  4. Step 4: Simplify right side
    281.43x = 104,200.83
  5. Step 5: Solve for x
    x = 104,200.83/281.43
  6. Step 6: Final answer
    x = 370.25

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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.