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Finding the Fourth Proportional to 649.43, 896.60 and 401.08

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Solution

The fourth proportional to 649.43, 896.60 and 401.08 is: 553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.43 : 896.60 = 401.08 : x
  2. Step 2: Convert to fraction form
    649.43/896.60 = 401.08/x
  3. Step 3: Cross multiply
    649.43x = 896.60 × 401.08
  4. Step 4: Simplify right side
    649.43x = 359,608.33
  5. Step 5: Solve for x
    x = 359,608.33/649.43
  6. Step 6: Final answer
    x = 553.73

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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.