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Finding the Fourth Proportional to 251.23, 348.30 and 242.32

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Solution

The fourth proportional to 251.23, 348.30 and 242.32 is: 335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.23 : 348.30 = 242.32 : x
  2. Step 2: Convert to fraction form
    251.23/348.30 = 242.32/x
  3. Step 3: Cross multiply
    251.23x = 348.30 × 242.32
  4. Step 4: Simplify right side
    251.23x = 84,400.66
  5. Step 5: Solve for x
    x = 84,400.66/251.23
  6. Step 6: Final answer
    x = 335.95

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.