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Finding the Fourth Proportional to 263.43, 393.06 and 247.83

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Solution

The fourth proportional to 263.43, 393.06 and 247.83 is: 369.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.43 : 393.06 = 247.83 : x
  2. Step 2: Convert to fraction form
    263.43/393.06 = 247.83/x
  3. Step 3: Cross multiply
    263.43x = 393.06 × 247.83
  4. Step 4: Simplify right side
    263.43x = 97,412.06
  5. Step 5: Solve for x
    x = 97,412.06/263.43
  6. Step 6: Final answer
    x = 369.78

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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.