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Finding the Fourth Proportional to 236.30, 325.98 and 143

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Solution

The fourth proportional to 236.30, 325.98 and 143 is: 197.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.30 : 325.98 = 143 : x
  2. Step 2: Convert to fraction form
    236.30/325.98 = 143/x
  3. Step 3: Cross multiply
    236.30x = 325.98 × 143
  4. Step 4: Simplify right side
    236.30x = 46,615.14
  5. Step 5: Solve for x
    x = 46,615.14/236.30
  6. Step 6: Final answer
    x = 197.27

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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.