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Finding the Fourth Proportional to 173.00, 259.63 and 76.88

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Solution

The fourth proportional to 173.00, 259.63 and 76.88 is: 115.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.00 : 259.63 = 76.88 : x
  2. Step 2: Convert to fraction form
    173.00/259.63 = 76.88/x
  3. Step 3: Cross multiply
    173.00x = 259.63 × 76.88
  4. Step 4: Simplify right side
    173.00x = 19,958.86
  5. Step 5: Solve for x
    x = 19,958.86/173.00
  6. Step 6: Final answer
    x = 115.37

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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.