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Finding the Fourth Proportional to 173.31, 259.55 and 136.99

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Solution

The fourth proportional to 173.31, 259.55 and 136.99 is: 205.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.31 : 259.55 = 136.99 : x
  2. Step 2: Convert to fraction form
    173.31/259.55 = 136.99/x
  3. Step 3: Cross multiply
    173.31x = 259.55 × 136.99
  4. Step 4: Simplify right side
    173.31x = 35,555.75
  5. Step 5: Solve for x
    x = 35,555.75/173.31
  6. Step 6: Final answer
    x = 205.16

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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.