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Finding the Third Proportional to 400 and 589.50

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Solution

The third proportional to 400 and 589.50 is: 868.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400 : 589.50 = 589.50 : x
  2. Step 2: Convert to fraction form
    400/589.50 = 589.50/x
  3. Step 3: Cross multiply
    400x = 589.50 × 589.50
  4. Step 4: Simplify right side
    400x = 347,510.25
  5. Step 5: Solve for x
    x = 347,510.25/400
  6. Step 6: Final answer
    x = 868.78

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.