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Finding the Fourth Proportional to 183.83, 253.88 and 139.48

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Solution

The fourth proportional to 183.83, 253.88 and 139.48 is: 192.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.83 : 253.88 = 139.48 : x
  2. Step 2: Convert to fraction form
    183.83/253.88 = 139.48/x
  3. Step 3: Cross multiply
    183.83x = 253.88 × 139.48
  4. Step 4: Simplify right side
    183.83x = 35,410.70
  5. Step 5: Solve for x
    x = 35,410.70/183.83
  6. Step 6: Final answer
    x = 192.63

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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.