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Finding the Fourth Proportional to 636.72, 883.14 and 610.80

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Solution

The fourth proportional to 636.72, 883.14 and 610.80 is: 847.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.72 : 883.14 = 610.80 : x
  2. Step 2: Convert to fraction form
    636.72/883.14 = 610.80/x
  3. Step 3: Cross multiply
    636.72x = 883.14 × 610.80
  4. Step 4: Simplify right side
    636.72x = 539,421.91
  5. Step 5: Solve for x
    x = 539,421.91/636.72
  6. Step 6: Final answer
    x = 847.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.