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Finding the Fourth Proportional to 422.82, 583.40 and 248.06

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Solution

The fourth proportional to 422.82, 583.40 and 248.06 is: 342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.82 : 583.40 = 248.06 : x
  2. Step 2: Convert to fraction form
    422.82/583.40 = 248.06/x
  3. Step 3: Cross multiply
    422.82x = 583.40 × 248.06
  4. Step 4: Simplify right side
    422.82x = 144,720.28
  5. Step 5: Solve for x
    x = 144,720.28/422.82
  6. Step 6: Final answer
    x = 342.27

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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.