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Finding the Fourth Proportional to 250.37, 345.49 and 139.83

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Solution

The fourth proportional to 250.37, 345.49 and 139.83 is: 192.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.37 : 345.49 = 139.83 : x
  2. Step 2: Convert to fraction form
    250.37/345.49 = 139.83/x
  3. Step 3: Cross multiply
    250.37x = 345.49 × 139.83
  4. Step 4: Simplify right side
    250.37x = 48,309.17
  5. Step 5: Solve for x
    x = 48,309.17/250.37
  6. Step 6: Final answer
    x = 192.95

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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.