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Finding the Fourth Proportional to 236.60, 352.82 and 220.17

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Solution

The fourth proportional to 236.60, 352.82 and 220.17 is: 328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.60 : 352.82 = 220.17 : x
  2. Step 2: Convert to fraction form
    236.60/352.82 = 220.17/x
  3. Step 3: Cross multiply
    236.60x = 352.82 × 220.17
  4. Step 4: Simplify right side
    236.60x = 77,677.51
  5. Step 5: Solve for x
    x = 77,677.51/236.60
  6. Step 6: Final answer
    x = 328.30

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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.