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Finding the Fourth Proportional to 650.08, 896.88 and 397.92

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Solution

The fourth proportional to 650.08, 896.88 and 397.92 is: 548.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.08 : 896.88 = 397.92 : x
  2. Step 2: Convert to fraction form
    650.08/896.88 = 397.92/x
  3. Step 3: Cross multiply
    650.08x = 896.88 × 397.92
  4. Step 4: Simplify right side
    650.08x = 356,886.49
  5. Step 5: Solve for x
    x = 356,886.49/650.08
  6. Step 6: Final answer
    x = 548.99

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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.