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Finding the Fourth Proportional to 445.03, 669.75 and 335.90

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Solution

The fourth proportional to 445.03, 669.75 and 335.90 is: 505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.03 : 669.75 = 335.90 : x
  2. Step 2: Convert to fraction form
    445.03/669.75 = 335.90/x
  3. Step 3: Cross multiply
    445.03x = 669.75 × 335.90
  4. Step 4: Simplify right side
    445.03x = 224,969.03
  5. Step 5: Solve for x
    x = 224,969.03/445.03
  6. Step 6: Final answer
    x = 505.51

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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.