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Finding the Fourth Proportional to 427.53, 641.29 and 236.37

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Solution

The fourth proportional to 427.53, 641.29 and 236.37 is: 354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.53 : 641.29 = 236.37 : x
  2. Step 2: Convert to fraction form
    427.53/641.29 = 236.37/x
  3. Step 3: Cross multiply
    427.53x = 641.29 × 236.37
  4. Step 4: Simplify right side
    427.53x = 151,581.72
  5. Step 5: Solve for x
    x = 151,581.72/427.53
  6. Step 6: Final answer
    x = 354.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.