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Finding the Fourth Proportional to 306.72, 422.53 and 244.53

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Solution

The fourth proportional to 306.72, 422.53 and 244.53 is: 336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.72 : 422.53 = 244.53 : x
  2. Step 2: Convert to fraction form
    306.72/422.53 = 244.53/x
  3. Step 3: Cross multiply
    306.72x = 422.53 × 244.53
  4. Step 4: Simplify right side
    306.72x = 103,321.26
  5. Step 5: Solve for x
    x = 103,321.26/306.72
  6. Step 6: Final answer
    x = 336.86

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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.