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Finding the Fourth Proportional to 607.97, 910.56 and 445.25

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Solution

The fourth proportional to 607.97, 910.56 and 445.25 is: 666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.97 : 910.56 = 445.25 : x
  2. Step 2: Convert to fraction form
    607.97/910.56 = 445.25/x
  3. Step 3: Cross multiply
    607.97x = 910.56 × 445.25
  4. Step 4: Simplify right side
    607.97x = 405,426.84
  5. Step 5: Solve for x
    x = 405,426.84/607.97
  6. Step 6: Final answer
    x = 666.85

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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.