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Finding the Fourth Proportional to 650.88, 896.85 and 493.20

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Solution

The fourth proportional to 650.88, 896.85 and 493.20 is: 679.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.88 : 896.85 = 493.20 : x
  2. Step 2: Convert to fraction form
    650.88/896.85 = 493.20/x
  3. Step 3: Cross multiply
    650.88x = 896.85 × 493.20
  4. Step 4: Simplify right side
    650.88x = 442,326.42
  5. Step 5: Solve for x
    x = 442,326.42/650.88
  6. Step 6: Final answer
    x = 679.58

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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.