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Finding the Fourth Proportional to 391.98, 587.57 and 175.58

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Solution

The fourth proportional to 391.98, 587.57 and 175.58 is: 263.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.98 : 587.57 = 175.58 : x
  2. Step 2: Convert to fraction form
    391.98/587.57 = 175.58/x
  3. Step 3: Cross multiply
    391.98x = 587.57 × 175.58
  4. Step 4: Simplify right side
    391.98x = 103,161.72
  5. Step 5: Solve for x
    x = 103,161.72/391.98
  6. Step 6: Final answer
    x = 263.18

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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.