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Finding the Fourth Proportional to 424.27, 585.38 and 306.28

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Solution

The fourth proportional to 424.27, 585.38 and 306.28 is: 422.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.27 : 585.38 = 306.28 : x
  2. Step 2: Convert to fraction form
    424.27/585.38 = 306.28/x
  3. Step 3: Cross multiply
    424.27x = 585.38 × 306.28
  4. Step 4: Simplify right side
    424.27x = 179,285.73
  5. Step 5: Solve for x
    x = 179,285.73/424.27
  6. Step 6: Final answer
    x = 422.58

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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.