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Finding the Fourth Proportional to 401.18, 600.74 and 339.67

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Solution

The fourth proportional to 401.18, 600.74 and 339.67 is: 508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.18 : 600.74 = 339.67 : x
  2. Step 2: Convert to fraction form
    401.18/600.74 = 339.67/x
  3. Step 3: Cross multiply
    401.18x = 600.74 × 339.67
  4. Step 4: Simplify right side
    401.18x = 204,052.95
  5. Step 5: Solve for x
    x = 204,052.95/401.18
  6. Step 6: Final answer
    x = 508.63

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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.