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Finding the Fourth Proportional to 556.26, 834.40 and 171.50

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Solution

The fourth proportional to 556.26, 834.40 and 171.50 is: 257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.26 : 834.40 = 171.50 : x
  2. Step 2: Convert to fraction form
    556.26/834.40 = 171.50/x
  3. Step 3: Cross multiply
    556.26x = 834.40 × 171.50
  4. Step 4: Simplify right side
    556.26x = 143,099.60
  5. Step 5: Solve for x
    x = 143,099.60/556.26
  6. Step 6: Final answer
    x = 257.25

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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.