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Finding the Fourth Proportional to 463.05, 693.42 and 289.19

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Solution

The fourth proportional to 463.05, 693.42 and 289.19 is: 433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.05 : 693.42 = 289.19 : x
  2. Step 2: Convert to fraction form
    463.05/693.42 = 289.19/x
  3. Step 3: Cross multiply
    463.05x = 693.42 × 289.19
  4. Step 4: Simplify right side
    463.05x = 200,530.85
  5. Step 5: Solve for x
    x = 200,530.85/463.05
  6. Step 6: Final answer
    x = 433.06

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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.