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Finding the Fourth Proportional to 278.52, 418.26 and 183

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Solution

The fourth proportional to 278.52, 418.26 and 183 is: 274.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.52 : 418.26 = 183 : x
  2. Step 2: Convert to fraction form
    278.52/418.26 = 183/x
  3. Step 3: Cross multiply
    278.52x = 418.26 × 183
  4. Step 4: Simplify right side
    278.52x = 76,541.58
  5. Step 5: Solve for x
    x = 76,541.58/278.52
  6. Step 6: Final answer
    x = 274.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.