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Finding the Fourth Proportional to 538.14, 805.59 and 381.41

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Solution

The fourth proportional to 538.14, 805.59 and 381.41 is: 570.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.14 : 805.59 = 381.41 : x
  2. Step 2: Convert to fraction form
    538.14/805.59 = 381.41/x
  3. Step 3: Cross multiply
    538.14x = 805.59 × 381.41
  4. Step 4: Simplify right side
    538.14x = 307,256.05
  5. Step 5: Solve for x
    x = 307,256.05/538.14
  6. Step 6: Final answer
    x = 570.96

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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.