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Finding the Fourth Proportional to 173.07, 259.74 and 70.34

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Solution

The fourth proportional to 173.07, 259.74 and 70.34 is: 105.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.07 : 259.74 = 70.34 : x
  2. Step 2: Convert to fraction form
    173.07/259.74 = 70.34/x
  3. Step 3: Cross multiply
    173.07x = 259.74 × 70.34
  4. Step 4: Simplify right side
    173.07x = 18,268.81
  5. Step 5: Solve for x
    x = 18,268.81/173.07
  6. Step 6: Final answer
    x = 105.56

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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.