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Finding the Fourth Proportional to 422.56, 583.12 and 236.07

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Solution

The fourth proportional to 422.56, 583.12 and 236.07 is: 325.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.56 : 583.12 = 236.07 : x
  2. Step 2: Convert to fraction form
    422.56/583.12 = 236.07/x
  3. Step 3: Cross multiply
    422.56x = 583.12 × 236.07
  4. Step 4: Simplify right side
    422.56x = 137,657.43
  5. Step 5: Solve for x
    x = 137,657.43/422.56
  6. Step 6: Final answer
    x = 325.77

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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.