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Finding the Fourth Proportional to 280.94, 386.87 and 241.31

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Solution

The fourth proportional to 280.94, 386.87 and 241.31 is: 332.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.94 : 386.87 = 241.31 : x
  2. Step 2: Convert to fraction form
    280.94/386.87 = 241.31/x
  3. Step 3: Cross multiply
    280.94x = 386.87 × 241.31
  4. Step 4: Simplify right side
    280.94x = 93,352.46
  5. Step 5: Solve for x
    x = 93,352.46/280.94
  6. Step 6: Final answer
    x = 332.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.