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Finding the Fourth Proportional to 395.59, 593.35 and 121.67

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Solution

The fourth proportional to 395.59, 593.35 and 121.67 is: 182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.59 : 593.35 = 121.67 : x
  2. Step 2: Convert to fraction form
    395.59/593.35 = 121.67/x
  3. Step 3: Cross multiply
    395.59x = 593.35 × 121.67
  4. Step 4: Simplify right side
    395.59x = 72,192.89
  5. Step 5: Solve for x
    x = 72,192.89/395.59
  6. Step 6: Final answer
    x = 182.49

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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.