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Finding the Fourth Proportional to 674.00, 1,010.61 and 400.28

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Solution

The fourth proportional to 674.00, 1,010.61 and 400.28 is: 600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.00 : 1,010.61 = 400.28 : x
  2. Step 2: Convert to fraction form
    674.00/1,010.61 = 400.28/x
  3. Step 3: Cross multiply
    674.00x = 1,010.61 × 400.28
  4. Step 4: Simplify right side
    674.00x = 404,521.92
  5. Step 5: Solve for x
    x = 404,521.92/674.00
  6. Step 6: Final answer
    x = 600.19

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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.