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Finding the Fourth Proportional to 649.22, 895.91 and 369.46

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Solution

The fourth proportional to 649.22, 895.91 and 369.46 is: 509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.22 : 895.91 = 369.46 : x
  2. Step 2: Convert to fraction form
    649.22/895.91 = 369.46/x
  3. Step 3: Cross multiply
    649.22x = 895.91 × 369.46
  4. Step 4: Simplify right side
    649.22x = 331,002.18
  5. Step 5: Solve for x
    x = 331,002.18/649.22
  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.