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Finding the Fourth Proportional to 649.22, 896.01 and 400.49

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Solution

The fourth proportional to 649.22, 896.01 and 400.49 is: 552.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.22 : 896.01 = 400.49 : x
  2. Step 2: Convert to fraction form
    649.22/896.01 = 400.49/x
  3. Step 3: Cross multiply
    649.22x = 896.01 × 400.49
  4. Step 4: Simplify right side
    649.22x = 358,843.04
  5. Step 5: Solve for x
    x = 358,843.04/649.22
  6. Step 6: Final answer
    x = 552.73

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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.