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Finding the Fourth Proportional to 649.27, 895.89 and 387.37

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Solution

The fourth proportional to 649.27, 895.89 and 387.37 is: 534.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.27 : 895.89 = 387.37 : x
  2. Step 2: Convert to fraction form
    649.27/895.89 = 387.37/x
  3. Step 3: Cross multiply
    649.27x = 895.89 × 387.37
  4. Step 4: Simplify right side
    649.27x = 347,040.91
  5. Step 5: Solve for x
    x = 347,040.91/649.27
  6. Step 6: Final answer
    x = 534.51

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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.