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Finding the Fourth Proportional to 236.04, 325.70 and 142.80

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Solution

The fourth proportional to 236.04, 325.70 and 142.80 is: 197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.04 : 325.70 = 142.80 : x
  2. Step 2: Convert to fraction form
    236.04/325.70 = 142.80/x
  3. Step 3: Cross multiply
    236.04x = 325.70 × 142.80
  4. Step 4: Simplify right side
    236.04x = 46,508.56
  5. Step 5: Solve for x
    x = 46,508.56/236.04
  6. Step 6: Final answer
    x = 197.04

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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.