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Finding the Fourth Proportional to 538.63, 807.81 and 173.34

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Solution

The fourth proportional to 538.63, 807.81 and 173.34 is: 259.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.63 : 807.81 = 173.34 : x
  2. Step 2: Convert to fraction form
    538.63/807.81 = 173.34/x
  3. Step 3: Cross multiply
    538.63x = 807.81 × 173.34
  4. Step 4: Simplify right side
    538.63x = 140,025.79
  5. Step 5: Solve for x
    x = 140,025.79/538.63
  6. Step 6: Final answer
    x = 259.97

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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.