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Finding the Fourth Proportional to 649.28, 895.97 and 369.47

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Solution

The fourth proportional to 649.28, 895.97 and 369.47 is: 509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.28 : 895.97 = 369.47 : x
  2. Step 2: Convert to fraction form
    649.28/895.97 = 369.47/x
  3. Step 3: Cross multiply
    649.28x = 895.97 × 369.47
  4. Step 4: Simplify right side
    649.28x = 331,032.19
  5. Step 5: Solve for x
    x = 331,032.19/649.28
  6. Step 6: Final answer
    x = 509.85

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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.