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Finding the Fourth Proportional to 556.14, 834.39 and 171.39

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Solution

The fourth proportional to 556.14, 834.39 and 171.39 is: 257.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.14 : 834.39 = 171.39 : x
  2. Step 2: Convert to fraction form
    556.14/834.39 = 171.39/x
  3. Step 3: Cross multiply
    556.14x = 834.39 × 171.39
  4. Step 4: Simplify right side
    556.14x = 143,006.10
  5. Step 5: Solve for x
    x = 143,006.10/556.14
  6. Step 6: Final answer
    x = 257.14

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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.