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Finding the Fourth Proportional to 232.16, 320.19 and 143.55

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Solution

The fourth proportional to 232.16, 320.19 and 143.55 is: 197.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.16 : 320.19 = 143.55 : x
  2. Step 2: Convert to fraction form
    232.16/320.19 = 143.55/x
  3. Step 3: Cross multiply
    232.16x = 320.19 × 143.55
  4. Step 4: Simplify right side
    232.16x = 45,963.27
  5. Step 5: Solve for x
    x = 45,963.27/232.16
  6. Step 6: Final answer
    x = 197.99

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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.