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Finding the Fourth Proportional to 634.14, 948.42 and 551.79

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Solution

The fourth proportional to 634.14, 948.42 and 551.79 is: 825.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.14 : 948.42 = 551.79 : x
  2. Step 2: Convert to fraction form
    634.14/948.42 = 551.79/x
  3. Step 3: Cross multiply
    634.14x = 948.42 × 551.79
  4. Step 4: Simplify right side
    634.14x = 523,328.67
  5. Step 5: Solve for x
    x = 523,328.67/634.14
  6. Step 6: Final answer
    x = 825.26

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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.