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Finding the Fourth Proportional to 242.00, 333.79 and 154.63

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Solution

The fourth proportional to 242.00, 333.79 and 154.63 is: 213.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.00 : 333.79 = 154.63 : x
  2. Step 2: Convert to fraction form
    242.00/333.79 = 154.63/x
  3. Step 3: Cross multiply
    242.00x = 333.79 × 154.63
  4. Step 4: Simplify right side
    242.00x = 51,614.85
  5. Step 5: Solve for x
    x = 51,614.85/242.00
  6. Step 6: Final answer
    x = 213.29

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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.