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Finding the Fourth Proportional to 173.57, 239.62 and 118.55

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Solution

The fourth proportional to 173.57, 239.62 and 118.55 is: 163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.57 : 239.62 = 118.55 : x
  2. Step 2: Convert to fraction form
    173.57/239.62 = 118.55/x
  3. Step 3: Cross multiply
    173.57x = 239.62 × 118.55
  4. Step 4: Simplify right side
    173.57x = 28,407.25
  5. Step 5: Solve for x
    x = 28,407.25/173.57
  6. Step 6: Final answer
    x = 163.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.