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Finding the Fourth Proportional to 184.49, 276.53 and 138.69

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Solution

The fourth proportional to 184.49, 276.53 and 138.69 is: 207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.49 : 276.53 = 138.69 : x
  2. Step 2: Convert to fraction form
    184.49/276.53 = 138.69/x
  3. Step 3: Cross multiply
    184.49x = 276.53 × 138.69
  4. Step 4: Simplify right side
    184.49x = 38,352.29
  5. Step 5: Solve for x
    x = 38,352.29/184.49
  6. Step 6: Final answer
    x = 207.89

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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.