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Finding the Fourth Proportional to 236.71, 354.30 and 203.91

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Solution

The fourth proportional to 236.71, 354.30 and 203.91 is: 305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.71 : 354.30 = 203.91 : x
  2. Step 2: Convert to fraction form
    236.71/354.30 = 203.91/x
  3. Step 3: Cross multiply
    236.71x = 354.30 × 203.91
  4. Step 4: Simplify right side
    236.71x = 72,245.03
  5. Step 5: Solve for x
    x = 72,245.03/236.71
  6. Step 6: Final answer
    x = 305.20

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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.