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Finding the Fourth Proportional to 242.03, 333.94 and 143.80

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Solution

The fourth proportional to 242.03, 333.94 and 143.80 is: 198.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.03 : 333.94 = 143.80 : x
  2. Step 2: Convert to fraction form
    242.03/333.94 = 143.80/x
  3. Step 3: Cross multiply
    242.03x = 333.94 × 143.80
  4. Step 4: Simplify right side
    242.03x = 48,020.57
  5. Step 5: Solve for x
    x = 48,020.57/242.03
  6. Step 6: Final answer
    x = 198.41

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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.