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Finding the Fourth Proportional to 278.52, 384.14 and 185.10

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Solution

The fourth proportional to 278.52, 384.14 and 185.10 is: 255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.52 : 384.14 = 185.10 : x
  2. Step 2: Convert to fraction form
    278.52/384.14 = 185.10/x
  3. Step 3: Cross multiply
    278.52x = 384.14 × 185.10
  4. Step 4: Simplify right side
    278.52x = 71,104.31
  5. Step 5: Solve for x
    x = 71,104.31/278.52
  6. Step 6: Final answer
    x = 255.29

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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.