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Finding the Fourth Proportional to 628, 868.26 and 600.80

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Solution

The fourth proportional to 628, 868.26 and 600.80 is: 830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    628 : 868.26 = 600.80 : x
  2. Step 2: Convert to fraction form
    628/868.26 = 600.80/x
  3. Step 3: Cross multiply
    628x = 868.26 × 600.80
  4. Step 4: Simplify right side
    628x = 521,650.61
  5. Step 5: Solve for x
    x = 521,650.61/628
  6. Step 6: Final answer
    x = 830.65

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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.