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Finding the Fourth Proportional to 173.39, 259.88 and 70.61

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Solution

The fourth proportional to 173.39, 259.88 and 70.61 is: 105.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.39 : 259.88 = 70.61 : x
  2. Step 2: Convert to fraction form
    173.39/259.88 = 70.61/x
  3. Step 3: Cross multiply
    173.39x = 259.88 × 70.61
  4. Step 4: Simplify right side
    173.39x = 18,348.47
  5. Step 5: Solve for x
    x = 18,348.47/173.39
  6. Step 6: Final answer
    x = 105.83

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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.