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Finding the Fourth Proportional to 236.35, 352.58 and 209.35

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Solution

The fourth proportional to 236.35, 352.58 and 209.35 is: 312.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.35 : 352.58 = 209.35 : x
  2. Step 2: Convert to fraction form
    236.35/352.58 = 209.35/x
  3. Step 3: Cross multiply
    236.35x = 352.58 × 209.35
  4. Step 4: Simplify right side
    236.35x = 73,812.62
  5. Step 5: Solve for x
    x = 73,812.62/236.35
  6. Step 6: Final answer
    x = 312.30

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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.