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Finding the Fourth Proportional to 391.46, 587.20 and 175.04

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Solution

The fourth proportional to 391.46, 587.20 and 175.04 is: 262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.46 : 587.20 = 175.04 : x
  2. Step 2: Convert to fraction form
    391.46/587.20 = 175.04/x
  3. Step 3: Cross multiply
    391.46x = 587.20 × 175.04
  4. Step 4: Simplify right side
    391.46x = 102,783.49
  5. Step 5: Solve for x
    x = 102,783.49/391.46
  6. Step 6: Final answer
    x = 262.56

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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.