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Finding the Fourth Proportional to 278.06, 383.49 and 179.84

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Solution

The fourth proportional to 278.06, 383.49 and 179.84 is: 248.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.06 : 383.49 = 179.84 : x
  2. Step 2: Convert to fraction form
    278.06/383.49 = 179.84/x
  3. Step 3: Cross multiply
    278.06x = 383.49 × 179.84
  4. Step 4: Simplify right side
    278.06x = 68,967.80
  5. Step 5: Solve for x
    x = 68,967.80/278.06
  6. Step 6: Final answer
    x = 248.04

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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.