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Finding the Fourth Proportional to 280.20, 386.60 and 175.37

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Solution

The fourth proportional to 280.20, 386.60 and 175.37 is: 241.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.20 : 386.60 = 175.37 : x
  2. Step 2: Convert to fraction form
    280.20/386.60 = 175.37/x
  3. Step 3: Cross multiply
    280.20x = 386.60 × 175.37
  4. Step 4: Simplify right side
    280.20x = 67,795.23
  5. Step 5: Solve for x
    x = 67,795.23/280.20
  6. Step 6: Final answer
    x = 241.95

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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.