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Finding the Fourth Proportional to 173.20, 258.25 and 170.13

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Solution

The fourth proportional to 173.20, 258.25 and 170.13 is: 253.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.20 : 258.25 = 170.13 : x
  2. Step 2: Convert to fraction form
    173.20/258.25 = 170.13/x
  3. Step 3: Cross multiply
    173.20x = 258.25 × 170.13
  4. Step 4: Simplify right side
    173.20x = 43,936.07
  5. Step 5: Solve for x
    x = 43,936.07/173.20
  6. Step 6: Final answer
    x = 253.67

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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.