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Finding the Fourth Proportional to 248.91, 371.49 and 242.43

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Solution

The fourth proportional to 248.91, 371.49 and 242.43 is: 361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.91 : 371.49 = 242.43 : x
  2. Step 2: Convert to fraction form
    248.91/371.49 = 242.43/x
  3. Step 3: Cross multiply
    248.91x = 371.49 × 242.43
  4. Step 4: Simplify right side
    248.91x = 90,060.32
  5. Step 5: Solve for x
    x = 90,060.32/248.91
  6. Step 6: Final answer
    x = 361.82

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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.