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Finding the Fourth Proportional to 184.31, 276.21 and 143.54

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Solution

The fourth proportional to 184.31, 276.21 and 143.54 is: 215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.31 : 276.21 = 143.54 : x
  2. Step 2: Convert to fraction form
    184.31/276.21 = 143.54/x
  3. Step 3: Cross multiply
    184.31x = 276.21 × 143.54
  4. Step 4: Simplify right side
    184.31x = 39,646.84
  5. Step 5: Solve for x
    x = 39,646.84/184.31
  6. Step 6: Final answer
    x = 215.11

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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.