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Finding the Fourth Proportional to 751.26, 1,126.94 and 203.43

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Solution

The fourth proportional to 751.26, 1,126.94 and 203.43 is: 305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.26 : 1,126.94 = 203.43 : x
  2. Step 2: Convert to fraction form
    751.26/1,126.94 = 203.43/x
  3. Step 3: Cross multiply
    751.26x = 1,126.94 × 203.43
  4. Step 4: Simplify right side
    751.26x = 229,252.39
  5. Step 5: Solve for x
    x = 229,252.39/751.26
  6. Step 6: Final answer
    x = 305.16

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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.