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Finding the Fourth Proportional to 649.11, 896.09 and 607.67

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Solution

The fourth proportional to 649.11, 896.09 and 607.67 is: 838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.11 : 896.09 = 607.67 : x
  2. Step 2: Convert to fraction form
    649.11/896.09 = 607.67/x
  3. Step 3: Cross multiply
    649.11x = 896.09 × 607.67
  4. Step 4: Simplify right side
    649.11x = 544,519.49
  5. Step 5: Solve for x
    x = 544,519.49/649.11
  6. Step 6: Final answer
    x = 838.87

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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.