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Finding the Fourth Proportional to 262.71, 391.77 and 248.33

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Solution

The fourth proportional to 262.71, 391.77 and 248.33 is: 370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.71 : 391.77 = 248.33 : x
  2. Step 2: Convert to fraction form
    262.71/391.77 = 248.33/x
  3. Step 3: Cross multiply
    262.71x = 391.77 × 248.33
  4. Step 4: Simplify right side
    262.71x = 97,289.22
  5. Step 5: Solve for x
    x = 97,289.22/262.71
  6. Step 6: Final answer
    x = 370.33

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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.