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Finding the Fourth Proportional to 401.90, 603.45 and 333.86

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Solution

The fourth proportional to 401.90, 603.45 and 333.86 is: 501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.90 : 603.45 = 333.86 : x
  2. Step 2: Convert to fraction form
    401.90/603.45 = 333.86/x
  3. Step 3: Cross multiply
    401.90x = 603.45 × 333.86
  4. Step 4: Simplify right side
    401.90x = 201,464.80
  5. Step 5: Solve for x
    x = 201,464.80/401.90
  6. Step 6: Final answer
    x = 501.29

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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.