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Finding the Fourth Proportional to 391.81, 587.35 and 175.27

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Solution

The fourth proportional to 391.81, 587.35 and 175.27 is: 262.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.81 : 587.35 = 175.27 : x
  2. Step 2: Convert to fraction form
    391.81/587.35 = 175.27/x
  3. Step 3: Cross multiply
    391.81x = 587.35 × 175.27
  4. Step 4: Simplify right side
    391.81x = 102,944.83
  5. Step 5: Solve for x
    x = 102,944.83/391.81
  6. Step 6: Final answer
    x = 262.74

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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.