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Finding the Fourth Proportional to 672.17, 927.56 and 451.09

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Solution

The fourth proportional to 672.17, 927.56 and 451.09 is: 622.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.17 : 927.56 = 451.09 : x
  2. Step 2: Convert to fraction form
    672.17/927.56 = 451.09/x
  3. Step 3: Cross multiply
    672.17x = 927.56 × 451.09
  4. Step 4: Simplify right side
    672.17x = 418,413.04
  5. Step 5: Solve for x
    x = 418,413.04/672.17
  6. Step 6: Final answer
    x = 622.48

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Double scale
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1.5x scale

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.