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Finding the Fourth Proportional to 662.79, 994.17 and 251.43

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Solution

The fourth proportional to 662.79, 994.17 and 251.43 is: 377.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.79 : 994.17 = 251.43 : x
  2. Step 2: Convert to fraction form
    662.79/994.17 = 251.43/x
  3. Step 3: Cross multiply
    662.79x = 994.17 × 251.43
  4. Step 4: Simplify right side
    662.79x = 249,964.16
  5. Step 5: Solve for x
    x = 249,964.16/662.79
  6. Step 6: Final answer
    x = 377.14

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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.