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Finding the Fourth Proportional to 184.80, 276.72 and 99.12

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Solution

The fourth proportional to 184.80, 276.72 and 99.12 is: 148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.80 : 276.72 = 99.12 : x
  2. Step 2: Convert to fraction form
    184.80/276.72 = 99.12/x
  3. Step 3: Cross multiply
    184.80x = 276.72 × 99.12
  4. Step 4: Simplify right side
    184.80x = 27,428.49
  5. Step 5: Solve for x
    x = 27,428.49/184.80
  6. Step 6: Final answer
    x = 148.42

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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.