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Finding the Fourth Proportional to 395.55, 593.41 and 121.67

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Solution

The fourth proportional to 395.55, 593.41 and 121.67 is: 182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.55 : 593.41 = 121.67 : x
  2. Step 2: Convert to fraction form
    395.55/593.41 = 121.67/x
  3. Step 3: Cross multiply
    395.55x = 593.41 × 121.67
  4. Step 4: Simplify right side
    395.55x = 72,199.38
  5. Step 5: Solve for x
    x = 72,199.38/395.55
  6. Step 6: Final answer
    x = 182.53

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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.