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Finding the Fourth Proportional to 253.94, 378.87 and 241.70

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Solution

The fourth proportional to 253.94, 378.87 and 241.70 is: 360.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.94 : 378.87 = 241.70 : x
  2. Step 2: Convert to fraction form
    253.94/378.87 = 241.70/x
  3. Step 3: Cross multiply
    253.94x = 378.87 × 241.70
  4. Step 4: Simplify right side
    253.94x = 91,571.67
  5. Step 5: Solve for x
    x = 91,571.67/253.94
  6. Step 6: Final answer
    x = 360.60

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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.