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Finding the Fourth Proportional to 283.45, 391.08 and 173.02

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Solution

The fourth proportional to 283.45, 391.08 and 173.02 is: 238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.45 : 391.08 = 173.02 : x
  2. Step 2: Convert to fraction form
    283.45/391.08 = 173.02/x
  3. Step 3: Cross multiply
    283.45x = 391.08 × 173.02
  4. Step 4: Simplify right side
    283.45x = 67,664.66
  5. Step 5: Solve for x
    x = 67,664.66/283.45
  6. Step 6: Final answer
    x = 238.72

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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.