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Finding the Fourth Proportional to 250.39, 344.30 and 242.70

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Solution

The fourth proportional to 250.39, 344.30 and 242.70 is: 333.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.39 : 344.30 = 242.70 : x
  2. Step 2: Convert to fraction form
    250.39/344.30 = 242.70/x
  3. Step 3: Cross multiply
    250.39x = 344.30 × 242.70
  4. Step 4: Simplify right side
    250.39x = 83,561.61
  5. Step 5: Solve for x
    x = 83,561.61/250.39
  6. Step 6: Final answer
    x = 333.73

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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.