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Finding the Fourth Proportional to 284.37, 392.25 and 173.80

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Solution

The fourth proportional to 284.37, 392.25 and 173.80 is: 239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.37 : 392.25 = 173.80 : x
  2. Step 2: Convert to fraction form
    284.37/392.25 = 173.80/x
  3. Step 3: Cross multiply
    284.37x = 392.25 × 173.80
  4. Step 4: Simplify right side
    284.37x = 68,173.05
  5. Step 5: Solve for x
    x = 68,173.05/284.37
  6. Step 6: Final answer
    x = 239.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.