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Finding the Fourth Proportional to 242.21, 361.29 and 234.23

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Solution

The fourth proportional to 242.21, 361.29 and 234.23 is: 349.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.21 : 361.29 = 234.23 : x
  2. Step 2: Convert to fraction form
    242.21/361.29 = 234.23/x
  3. Step 3: Cross multiply
    242.21x = 361.29 × 234.23
  4. Step 4: Simplify right side
    242.21x = 84,623.15
  5. Step 5: Solve for x
    x = 84,623.15/242.21
  6. Step 6: Final answer
    x = 349.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.