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Finding the Fourth Proportional to 263.45, 393.42 and 248.27

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Solution

The fourth proportional to 263.45, 393.42 and 248.27 is: 370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.45 : 393.42 = 248.27 : x
  2. Step 2: Convert to fraction form
    263.45/393.42 = 248.27/x
  3. Step 3: Cross multiply
    263.45x = 393.42 × 248.27
  4. Step 4: Simplify right side
    263.45x = 97,674.38
  5. Step 5: Solve for x
    x = 97,674.38/263.45
  6. Step 6: Final answer
    x = 370.75

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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.