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Finding the Fourth Proportional to 260.42, 391.23 and 240.37

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Solution

The fourth proportional to 260.42, 391.23 and 240.37 is: 361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.42 : 391.23 = 240.37 : x
  2. Step 2: Convert to fraction form
    260.42/391.23 = 240.37/x
  3. Step 3: Cross multiply
    260.42x = 391.23 × 240.37
  4. Step 4: Simplify right side
    260.42x = 94,038.98
  5. Step 5: Solve for x
    x = 94,038.98/260.42
  6. Step 6: Final answer
    x = 361.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.