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Finding the Fourth Proportional to 262.44, 391.72 and 240.79

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Solution

The fourth proportional to 262.44, 391.72 and 240.79 is: 359.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.44 : 391.72 = 240.79 : x
  2. Step 2: Convert to fraction form
    262.44/391.72 = 240.79/x
  3. Step 3: Cross multiply
    262.44x = 391.72 × 240.79
  4. Step 4: Simplify right side
    262.44x = 94,322.26
  5. Step 5: Solve for x
    x = 94,322.26/262.44
  6. Step 6: Final answer
    x = 359.41

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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.