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Finding the Fourth Proportional to 392.50, 589 and 246.55

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Solution

The fourth proportional to 392.50, 589 and 246.55 is: 369.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.50 : 589 = 246.55 : x
  2. Step 2: Convert to fraction form
    392.50/589 = 246.55/x
  3. Step 3: Cross multiply
    392.50x = 589 × 246.55
  4. Step 4: Simplify right side
    392.50x = 145,215.01
  5. Step 5: Solve for x
    x = 145,215.01/392.50
  6. Step 6: Final answer
    x = 369.97

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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.