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Finding the Fourth Proportional to 445.97, 669.31 and 202.50

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Solution

The fourth proportional to 445.97, 669.31 and 202.50 is: 303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.97 : 669.31 = 202.50 : x
  2. Step 2: Convert to fraction form
    445.97/669.31 = 202.50/x
  3. Step 3: Cross multiply
    445.97x = 669.31 × 202.50
  4. Step 4: Simplify right side
    445.97x = 135,534.77
  5. Step 5: Solve for x
    x = 135,534.77/445.97
  6. Step 6: Final answer
    x = 303.91

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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.