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Finding the Fourth Proportional to 175.50, 262.32 and 139.02

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Solution

The fourth proportional to 175.50, 262.32 and 139.02 is: 207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.50 : 262.32 = 139.02 : x
  2. Step 2: Convert to fraction form
    175.50/262.32 = 139.02/x
  3. Step 3: Cross multiply
    175.50x = 262.32 × 139.02
  4. Step 4: Simplify right side
    175.50x = 36,467.73
  5. Step 5: Solve for x
    x = 36,467.73/175.50
  6. Step 6: Final answer
    x = 207.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.