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Finding the Fourth Proportional to 242.00, 333.81 and 143.69

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Solution

The fourth proportional to 242.00, 333.81 and 143.69 is: 198.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.00 : 333.81 = 143.69 : x
  2. Step 2: Convert to fraction form
    242.00/333.81 = 143.69/x
  3. Step 3: Cross multiply
    242.00x = 333.81 × 143.69
  4. Step 4: Simplify right side
    242.00x = 47,964.32
  5. Step 5: Solve for x
    x = 47,964.32/242.00
  6. Step 6: Final answer
    x = 198.20

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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.