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Finding the Fourth Proportional to 672.21, 925.74 and 605.25

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Solution

The fourth proportional to 672.21, 925.74 and 605.25 is: 833.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.21 : 925.74 = 605.25 : x
  2. Step 2: Convert to fraction form
    672.21/925.74 = 605.25/x
  3. Step 3: Cross multiply
    672.21x = 925.74 × 605.25
  4. Step 4: Simplify right side
    672.21x = 560,304.14
  5. Step 5: Solve for x
    x = 560,304.14/672.21
  6. Step 6: Final answer
    x = 833.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.