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Finding the Fourth Proportional to 525.44, 725.31 and 338.91

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Solution

The fourth proportional to 525.44, 725.31 and 338.91 is: 467.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.44 : 725.31 = 338.91 : x
  2. Step 2: Convert to fraction form
    525.44/725.31 = 338.91/x
  3. Step 3: Cross multiply
    525.44x = 725.31 × 338.91
  4. Step 4: Simplify right side
    525.44x = 245,814.81
  5. Step 5: Solve for x
    x = 245,814.81/525.44
  6. Step 6: Final answer
    x = 467.83

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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.