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Finding the Fourth Proportional to 236.28, 325.80 and 153.28

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Solution

The fourth proportional to 236.28, 325.80 and 153.28 is: 211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.28 : 325.80 = 153.28 : x
  2. Step 2: Convert to fraction form
    236.28/325.80 = 153.28/x
  3. Step 3: Cross multiply
    236.28x = 325.80 × 153.28
  4. Step 4: Simplify right side
    236.28x = 49,937.00
  5. Step 5: Solve for x
    x = 49,937.00/236.28
  6. Step 6: Final answer
    x = 211.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.