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Finding the Fourth Proportional to 633.89, 948.99 and 512.39

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Solution

The fourth proportional to 633.89, 948.99 and 512.39 is: 767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.89 : 948.99 = 512.39 : x
  2. Step 2: Convert to fraction form
    633.89/948.99 = 512.39/x
  3. Step 3: Cross multiply
    633.89x = 948.99 × 512.39
  4. Step 4: Simplify right side
    633.89x = 486,252.99
  5. Step 5: Solve for x
    x = 486,252.99/633.89
  6. Step 6: Final answer
    x = 767.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.