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Finding the Fourth Proportional to 649.11, 895.20 and 574.49

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Solution

The fourth proportional to 649.11, 895.20 and 574.49 is: 792.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.11 : 895.20 = 574.49 : x
  2. Step 2: Convert to fraction form
    649.11/895.20 = 574.49/x
  3. Step 3: Cross multiply
    649.11x = 895.20 × 574.49
  4. Step 4: Simplify right side
    649.11x = 514,278.97
  5. Step 5: Solve for x
    x = 514,278.97/649.11
  6. Step 6: Final answer
    x = 792.28

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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.