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Finding the Fourth Proportional to 236.96, 353.46 and 207.80

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Solution

The fourth proportional to 236.96, 353.46 and 207.80 is: 309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.96 : 353.46 = 207.80 : x
  2. Step 2: Convert to fraction form
    236.96/353.46 = 207.80/x
  3. Step 3: Cross multiply
    236.96x = 353.46 × 207.80
  4. Step 4: Simplify right side
    236.96x = 73,448.99
  5. Step 5: Solve for x
    x = 73,448.99/236.96
  6. Step 6: Final answer
    x = 309.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.