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Finding the Fourth Proportional to 184.48, 276.30 and 139.12

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Solution

The fourth proportional to 184.48, 276.30 and 139.12 is: 208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.48 : 276.30 = 139.12 : x
  2. Step 2: Convert to fraction form
    184.48/276.30 = 139.12/x
  3. Step 3: Cross multiply
    184.48x = 276.30 × 139.12
  4. Step 4: Simplify right side
    184.48x = 38,438.86
  5. Step 5: Solve for x
    x = 38,438.86/184.48
  6. Step 6: Final answer
    x = 208.36

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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.