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Finding the Fourth Proportional to 306.56, 422.80 and 244.28

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Solution

The fourth proportional to 306.56, 422.80 and 244.28 is: 336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.56 : 422.80 = 244.28 : x
  2. Step 2: Convert to fraction form
    306.56/422.80 = 244.28/x
  3. Step 3: Cross multiply
    306.56x = 422.80 × 244.28
  4. Step 4: Simplify right side
    306.56x = 103,281.58
  5. Step 5: Solve for x
    x = 103,281.58/306.56
  6. Step 6: Final answer
    x = 336.90

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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.