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Finding the Fourth Proportional to 278.37, 384.10 and 180.11

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Solution

The fourth proportional to 278.37, 384.10 and 180.11 is: 248.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.37 : 384.10 = 180.11 : x
  2. Step 2: Convert to fraction form
    278.37/384.10 = 180.11/x
  3. Step 3: Cross multiply
    278.37x = 384.10 × 180.11
  4. Step 4: Simplify right side
    278.37x = 69,180.76
  5. Step 5: Solve for x
    x = 69,180.76/278.37
  6. Step 6: Final answer
    x = 248.52

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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.