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Finding the Fourth Proportional to 649.67, 896.54 and 384.29

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Solution

The fourth proportional to 649.67, 896.54 and 384.29 is: 530.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.67 : 896.54 = 384.29 : x
  2. Step 2: Convert to fraction form
    649.67/896.54 = 384.29/x
  3. Step 3: Cross multiply
    649.67x = 896.54 × 384.29
  4. Step 4: Simplify right side
    649.67x = 344,536.60
  5. Step 5: Solve for x
    x = 344,536.60/649.67
  6. Step 6: Final answer
    x = 530.33

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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.