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Finding the Fourth Proportional to 280.90, 387.66 and 182.92

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Solution

The fourth proportional to 280.90, 387.66 and 182.92 is: 252.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.90 : 387.66 = 182.92 : x
  2. Step 2: Convert to fraction form
    280.90/387.66 = 182.92/x
  3. Step 3: Cross multiply
    280.90x = 387.66 × 182.92
  4. Step 4: Simplify right side
    280.90x = 70,910.77
  5. Step 5: Solve for x
    x = 70,910.77/280.90
  6. Step 6: Final answer
    x = 252.44

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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.